n/a
Body Lift
Posts:176
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| 09/22/2005 12:14 AM |
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hay guy's!
well just rebuilt the 355 in my truck
piston's:.030 over flattop's 4 releif's 10.3-1 with 64cc head's.
head's shaved .040 head's 61 cc's now
block stand. deck .100 or .150 not sure?
head gasket .040
static timing is 11 degrees before
my jetting is: 75 front 80 back
factory jetting is:77 front 83 back
the problem is it' popping through the carb a littel.Does this sound like I'm running it to lean.
any help from you pro's please!!! |
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Hay!! Can you get your dad's dozer? wwwwwwhaaaaaat?? |
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SnoMan
Lift & Lockers
Posts:943
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| 09/22/2005 3:21 AM |
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| You did not provide your cam stats to rule out if it was cam/timing issue but generally when she pops through carb it is lean. |
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Visit the SnoMan at
www.thesnoman.com |
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primetimek5
Lift & Lockers
Posts:537
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| 09/22/2005 5:21 AM |
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| ALSO CHECK YOUR 1 & 6 WIRE IF THEIR ON THE PROPER POSTION ON THE CAP.(MOST COMMON)
(FIRING ORDER KILLED ME FOR TWO WEEKS DUE TO A MISSPRINT ON A HAYNES MANUEL) |
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rick p. |
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n/a
Body Lift
Posts:176
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| 09/22/2005 12:14 PM |
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cam spec's:
grind number cs xr270hr 10 part # 08-42-8
gross lift 495 IN 502 EX.
DURATION AT .006 270IN. 276 EX.
CENTER LINE set 106 in.
LOBE SEPARATION 110
WITH 1.6 MAG ROLLER TIP'S
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Hay!! Can you get your dad's dozer? wwwwwwhaaaaaat?? |
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primetimek5
Lift & Lockers
Posts:537
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| 09/22/2005 12:44 PM |
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| the fireing order is 1-8-4-3-6-5-7-2 is correct.
their is your problem.[dance] |
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rick p. |
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primetimek5
Lift & Lockers
Posts:537
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| 09/22/2005 12:59 PM |
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| you owe me a pack of cigs
just kidding[:D] |
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rick p. |
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n/a
Body Lift
Posts:176
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| 09/22/2005 1:09 PM |
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my bad!!!
I replyed with the wrong firing order. primetimek5 your right!!!
i checked it out on my truck last night. the fireing order is right.
as for setting the firing order.I rotated the crank till the second valve #1piston driver side front,went down then back up.I then brought the piston up to TDC.thenput the distributer in with rotor pointing at the mark i made on thedistributer houseing.
this were the #1plug is set fireing order:1-8-4-3-6-5-7-2
driver side 1-3-5-7-
pass.. side 2-4-6-8
hope this helped clear that up.LOL! |
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Hay!! Can you get your dad's dozer? wwwwwwhaaaaaat?? |
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webby4x4
Forum Admin, Magazine Editor
Rock Star
Posts:2375
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| 09/22/2005 1:18 PM |
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Is it back firing through the carb?
If so, I'd check:
1) To make sure you didn't insert the distributor one tooth off. (e.g. when you dropped the dist into the block, that it didn't come off timing by one tooth)
2) Check the timing. You said it was 11 degrees, which if memory serves me correctly is about 2.5 degrees advanced from OE settings. Have you tried running the engine with the timing advanced or retarded a few degrees?
Rick |
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Rick Webster
Editor, 4X4REVIEW.COM - A Tork Media, Inc. Publication
- - - - - - - - - - - - - - - - - - - - -
'74 FJ40 Land Cruiser
"Measure once, cut twice" |
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n/a
Body Lift
Posts:176
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| 09/22/2005 1:33 PM |
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static timing:11 degress before TDC!
took the plug out of # 1 set it to tdc.
took the cap off it's roughly 1/8-3/16 before the mark i made.
what about the pump gas 93 oct...??? |
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Hay!! Can you get your dad's dozer? wwwwwwhaaaaaat?? |
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webby4x4
Forum Admin, Magazine Editor
Rock Star
Posts:2375
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| 09/22/2005 1:43 PM |
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Hmmm...
If it's popping under acceleration, I'd look to the accellerator pump. The gasket may be bad and it's not sending enough fuel through when you stab the gas. Holley's have a really simple design which works well if everything is perfect, but if something is awry, they can be a real PITA.
That's the only thing coming to my mind right now.
Rick |
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Rick Webster
Editor, 4X4REVIEW.COM - A Tork Media, Inc. Publication
- - - - - - - - - - - - - - - - - - - - -
'74 FJ40 Land Cruiser
"Measure once, cut twice" |
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Dan Pitts
Body Lift
Posts:232
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| 09/22/2005 1:46 PM |
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| with all of that machine work that has been done to that motor you need to be running at least 93 octane or higher. also if that thing runs lean for an extended period of time you can burn up a valve. |
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Danny Pitts
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lift it, fat chicks can't jump |
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n/a
Body Lift
Posts:176
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| 09/22/2005 1:48 PM |
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carb complete newly rebuilt 50 cc accel... kit front and back.
think it's the jetting??? or the 93 oct...??? |
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Hay!! Can you get your dad's dozer? wwwwwwhaaaaaat?? |
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webby4x4
Forum Admin, Magazine Editor
Rock Star
Posts:2375
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| 09/22/2005 1:49 PM |
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yeah, but at worst, he'd get engine knock under heavy acceleration, not backfiring through th carb.
It really smells like a timing issue to me, but I'd still check that accelerator pump at the front of the Holley too. |
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Rick Webster
Editor, 4X4REVIEW.COM - A Tork Media, Inc. Publication
- - - - - - - - - - - - - - - - - - - - -
'74 FJ40 Land Cruiser
"Measure once, cut twice" |
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n/a
Body Lift
Posts:176
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| 09/22/2005 1:53 PM |
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ok will do!!
thank's for your help ,and in put be back in an hour. |
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Hay!! Can you get your dad's dozer? wwwwwwhaaaaaat?? |
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webby4x4
Forum Admin, Magazine Editor
Rock Star
Posts:2375
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| 09/22/2005 1:57 PM |
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Also, if you've modified that Holley by changing the jets, I'd make sure you got a matching acccelerator (I finally spelled that damn word right!) pump. If you're newly built engine is requiring more fuel - and it is - you need to upgrade the accelerator pump to match.
Lastly, I'd check all of the carb settings too. Make sure there are no leaks, the gaskets haven't torn, you have good vaccum and the windows are clear.
Rick |
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Rick Webster
Editor, 4X4REVIEW.COM - A Tork Media, Inc. Publication
- - - - - - - - - - - - - - - - - - - - -
'74 FJ40 Land Cruiser
"Measure once, cut twice" |
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primetimek5
Lift & Lockers
Posts:537
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| 09/22/2005 2:18 PM |
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| AWWWWWWWWWWW. THE PROBLEM I SEE ITS THE DAM CARB.
HOLLEY I PLAYED W/ THE TRUCK AVENGER FOR 3 WEEKS & I TOOK IT OFF &
PUT BACK ON THE EDELBROCK & IT STARTED ON ITS FIRST TRY W/ NO
TUNNING.
I WILL NEVER EVER EVER BY ANOTHER HOLLEY. |
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rick p. |
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n/a
Body Lift
Posts:176
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| 09/22/2005 3:26 PM |
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ok guy's here we go!!!
accelerator working fine gasket fine no tear's,no restriction's on the gasket
end.
next! brought it back.got to thinking of the accelerator cam.ajustted it twice made it run worst!!!
set it back.
took the front/back bowl's off changed the front jet's 76's and the back to 82's
put new power valve in it 8.5. vacum between:11-13
problem solved!!!
spark nocking a littel.so igot the light out and set it to 12 degress before top dead center. problem solved!!!
thank's guy's for all your input.now it's time to get that 100 miles on the cam and go play. |
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Hay!! Can you get your dad's dozer? wwwwwwhaaaaaat?? |
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n/a
Body Lift
Posts:176
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| 09/22/2005 3:32 PM |
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do you guy's think it could have been the power valve?
the one that was in it was:6.5
the new one is 8.5. |
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Hay!! Can you get your dad's dozer? wwwwwwhaaaaaat?? |
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n/a
Body Lift
Posts:176
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| 09/22/2005 11:36 PM |
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quote:
Originally posted by primetimek5
you owe me a pack of cigs
just kidding[:D]
were do i send it?[:D][:D][:D] |
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Hay!! Can you get your dad's dozer? wwwwwwhaaaaaat?? |
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SnoMan
Lift & Lockers
Posts:943
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| 09/23/2005 5:05 AM |
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quote:
Originally posted by webby4x4
yeah, but at worst, he'd get engine knock under heavy acceleration, not backfiring through th carb.
It really smells like a timing issue to me, but I'd still check that accelerator pump at the front of the Holley too.
I am not so sure here. I doubt it is static timing and believe it is the engine leaning out. The accelerator pump may be a factor but the leaner a engine is, the more critical the accelerator pumps operation becomes. Try this, raise float level in carb about 3/16 of a inch (this will richen all mixtures) and see if there is any change at all in the problem and the way the engine runs. If there is no improvement at all then the next thing to look at is the distribtor timing curve and vacum advance setup. |
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--------------------------
Visit the SnoMan at
www.thesnoman.com |
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webby4x4
Forum Admin, Magazine Editor
Rock Star
Posts:2375
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| 09/23/2005 7:04 AM |
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By the way, when you're working on your rig be sure to have a fire extinguisher handy!!! Backfires through the carb can quickly lead to a serious fire.
Here's something that will set your mind straight...
http://www.4x4review.com/discussions2/topic.asp?TOPIC_ID=17
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Rick Webster
Editor, 4X4REVIEW.COM - A Tork Media, Inc. Publication
- - - - - - - - - - - - - - - - - - - - -
'74 FJ40 Land Cruiser
"Measure once, cut twice" |
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primetimek5
Lift & Lockers
Posts:537
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| 09/23/2005 7:34 AM |
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| JUST PUT WATER IN THEIR IF IT CATCHES ON FIRE.
NO REALLY HAVE A FIRE EXTINGUISHER READY |
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rick p. |
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n/a
Body Lift
Posts:176
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| 09/23/2005 1:51 PM |
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(webby4x4)
I replyed to that post last night.hope that land cruiser is treating you better.
(snoman)
the float levels or right at the bottom of the window's F/B.vacum advance 32-34 degress at 2500 rpm's..new distributer accel hei.I bumped up the accelerator pump kit from the standerd 30cc to 50cc before i did the rebuild
on the motor.it ran fine in the motor before the rebuild.I change the jet's before to lean it out with the 9.0 compression/smaller valve head's.
if you read my last 2 post,I changed the jetting from a 75to76 F.- 80to82R.
this fixxed the back fire through the carb,but was not sure that was not all the problem.So I bought a power valve 8.5 and installed it.it had a 6.5 in it.
not sure if that did anything though.didn't make it run any diffrent.
after i got that straight'en out!I noticed a littel spark nock.so i back the timeing off afew degress,well one.it's running fine now.drove it to work today.no problem's.,But man!!!I'm ready to go play.he!he!he!
thank's for your reply's |
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Hay!! Can you get your dad's dozer? wwwwwwhaaaaaat?? |
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SnoMan
Lift & Lockers
Posts:943
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| 09/24/2005 3:58 AM |
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quote:
Originally posted by wide open
(webby4x4)
I replyed to that post last night.hope that land cruiser is treating you better.
(snoman)
the float levels or right at the bottom of the window's F/B.vacum advance 32-34 degress at 2500 rpm's..new distributer accel hei.I bumped up the accelerator pump kit from the standerd 30cc to 50cc before i did the rebuild
on the motor.it ran fine in the motor before the rebuild.I change the jet's before to lean it out with the 9.0 compression/smaller valve head's.
if you read my last 2 post,I changed the jetting from a 75to76 F.- 80to82R.
this fixxed the back fire through the carb,but was not sure that was not all the problem.So I bought a power valve 8.5 and installed it.it had a 6.5 in it.
not sure if that did anything though.didn't make it run any diffrent.
after i got that straight'en out!I noticed a littel spark nock.so i back the timeing off afew degress,well one.it's running fine now.drove it to work today.no problem's.,But man!!!I'm ready to go play.he!he!he!
thank's for your reply's
Try a 77 instead of a 76 as it may help your ping some. Also 9 to 1 is kinda high for 87 with no EGR or spark control and everytime you retard spark you lose power and MPG. If ping persists with 77's try 89 octane with a bit more spark. Myself, I only have one vehicle I use 87 in, a old stock 79 J20 with 8 to 1 compression, everything else is 89 or better. |
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Visit the SnoMan at
www.thesnoman.com |
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n/a
Body Lift
Posts:176
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| 09/25/2005 7:30 AM |
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| running 93 oct.. 10.3-1 10.5-1 compression now.somewere in there???
It's just my weekend/holaday's toy.
will do the jet upgrade to 77 jsut have to run to the LHS,and buy some or i just might just order the jet kit from jeg's or summit.I want to get an MSD ignition anyway thinking the 6Al or the off road one not sure what the model
is right off hand,but i like the idea of that rev limiter. |
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Hay!! Can you get your dad's dozer? wwwwwwhaaaaaat?? |
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SnoMan
Lift & Lockers
Posts:943
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| 09/25/2005 8:48 AM |
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quote:
Originally posted by wide open
running 93 oct.. 10.3-1 10.5-1 compression now.somewere in there???
It's just my weekend/holaday's toy.
will do the jet upgrade to 77 jsut have to run to the LHS,and buy some or i just might just order the jet kit from jeg's or summit.I want to get an MSD ignition anyway thinking the 6Al or the off road one not sure what the model
is right off hand,but i like the idea of that rev limiter.
Something else to think of is that you might pickup some 79's or so for winter driving so it does not lean out in cold temps with denser air. I used to do that years ago before fuel injection. |
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Visit the SnoMan at
www.thesnoman.com |
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n/a
Body Lift
Posts:176
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| 09/25/2005 9:50 AM |
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| good thought! planning on doing it when the weather change's here.Can't count on the snow up state to ride the sled's 2002 mxz 800 tweaked.but I guess that's for a diffrent forum. LOL!!!
well hope to get some freind's toghter tonight for some wheeling tonight at afreind's dad's farm.to see what this thing's going to do. sorry no pic's..
camrea.some one desided to releave me of it at a bog 2 month ago.500 buck's gone!!!
well maybe someone will have one or video cam. I'll post some pic's soon if it happen's tonight. |
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Hay!! Can you get your dad's dozer? wwwwwwhaaaaaat?? |
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SnoMan
Lift & Lockers
Posts:943
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| 09/25/2005 4:01 PM |
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quote:
Originally posted by wide open
good thought! planning on doing it when the weather change's here.Can't count on the snow up state to ride the sled's 2002 mxz 800 tweaked.but I guess that's for a diffrent forum. LOL!!!
well hope to get some freind's toghter tonight for some wheeling tonight at afreind's dad's farm.to see what this thing's going to do. sorry no pic's..
camrea.some one desided to releave me of it at a bog 2 month ago.500 buck's gone!!!
well maybe someone will have one or video cam. I'll post some pic's soon if it happen's tonight.
I like snowmobiling too. Used to do lot out west many years ago. I have 3 sled now that are real classics, Kawasaki's. Two 440's and a 340. The 440's real move for their size. One day I want to get a Interceptor to round out my collection. In its day it was the fasest sled ever build and even today it would be one to beat. I can only guess were they would be today if they had not quit them in 83. |
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Visit the SnoMan at
www.thesnoman.com |
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n/a
Body Lift
Posts:176
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| 09/25/2005 4:10 PM |
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| well still have my old yamhaw 540 v-max with the radiator and twin pipes all factory just under 5000 miles great crusier for me but don't get to far on 5 gal.'s.littel over 120 mile's to a tank,but a great sled for the back road's.
I still see some of them older sled's running around in the upper lowwer of mi.,and the lowwer of mi. |
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Hay!! Can you get your dad's dozer? wwwwwwhaaaaaat?? |
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ChevyMan0784
Lift & Lockers
Posts:699
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| 09/27/2005 12:17 AM |
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| I have run Holley, Edelbrock, Rochester, and Carter...on both muscle cars and my 4x's. If you don't want to work on it-Edelbrock/Carter, don't buy an old Rochester(unless thats your thing)and if you want adjustability and precision-Holley. Thats my opinion...but thats like telling a F@$% dude that Chevy is the best..(even though it is, snicker). To each his own...but from what I have learned, Don't buy a Holley unless you know how to work on it. Not saying that I know everyhting about Holley, (I am sure I will be the next one asking Q's and looking forA's)but when you get em running good, they are the best. I have been told that my 750dp in my 69 Elky was too much....hehehehe that was a great joke! God I love horsepower (taps inside of elbow and asks for more). |
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gimmie fuel gimmie fire gimmie that which I desire-James Hetfield
*Never give an Irish man good cause for revenge.
*Guns dont kill people, but they sure help!!
*98% OF AMERICANS SAY 'OH S**t' BEFORE GOING IN THE DITCH ON A ICEY ROAD.
THE OTHER 2% ARE FROM ALASKA, AND THEY SAY, 'HOLD MY BEER AND WATCH THIS |
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SnoMan
Lift & Lockers
Posts:943
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| 09/27/2005 3:52 AM |
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quote:
Originally posted by ChevyMan0784
I have run Holley, Edelbrock, Rochester, and Carter...on both muscle cars and my 4x's. If you don't want to work on it-Edelbrock/Carter, don't buy an old Rochester(unless thats your thing)and if you want adjustability and precision-Holley. Thats my opinion...but thats like telling a F@$% dude that Chevy is the best..(even though it is, snicker). To each his own...but from what I have learned, Don't buy a Holley unless you know how to work on it. Not saying that I know everyhting about Holley, (I am sure I will be the next one asking Q's and looking forA's)but when you get em running good, they are the best. I have been told that my 750dp in my 69 Elky was too much....hehehehe that was a great joke! God I love horsepower (taps inside of elbow and asks for more).
Actually it is a myth the bigger is always better with carbs. Usually a engine will run stronger in low and mid ranges with a smaller carb than a oversized one. 750 is big for a SB and it would likely run a bit better overall with a good 600 or 650 CFM carb. |
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Visit the SnoMan at
www.thesnoman.com |
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primetimek5
Lift & Lockers
Posts:537
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| 09/27/2005 5:38 AM |
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| YES, THAT IS TRUE MY 770 HOLLEY TRUCK AVENGER WAS GREAT FOR HIGH RPM.
PUT MY 600 EDELBROCK W/ OFF ROAD NEEDLE & SEAT WAS GREAT AT LOWER RPM &
SEEMED FOR BETTER TORQUE |
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rick p. |
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n/a
Body Lift
Posts:176
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| 09/27/2005 10:55 AM |
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any of you guy's checked out proform's carb body?
it is suppost to replace the 650 up to 800 dp carb body.
I'm running a 3" header's back dynomax exhaust system off a 79 chevy camaro.
ran it under the cross member. so flow is no problem for me.had a muffler shop put it in for me.they did a great job.(1-7/8 tube header's) |
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Hay!! Can you get your dad's dozer? wwwwwwhaaaaaat?? |
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