Low comp (head shim) and idle problems... please read!

  • Thread starter Thread starter Anonymous
  • Start date Start date
There is no way I have i tooth off them.... Trust me, I checked!

Will go on dyno again saturday... will let you know...
 
Got it on dyno today...

In short....

190 hp, 11 # of boost, 9-1 compression ratio, 110octane fuel....

And no way to adjust air fuel ratio to have a smooth curve all across....


So Dave (powderlite) check your Pm... I will give your box a try....


ENgine is in perfect condition, we tested compression at 140-145psi, did a valve leak test, were not leaking....

SO that leaves our efi problem.... did not test over 11-12psi since efi would not let us go any further without going fool....
 
mulot30th - your heading in the right direction, get the fuel system working and you're OK. Bring on the boost he-he :-)
 
Boondocker/ Powderlites EFI

Gee lots to be said about installs being done right on turbo kits and anykind!
I always try to help anyone out even if it's not our kit and hope that in future it comes back to impove sales with support to backup our customers.
Cam timming I think is key here. But could be wrong since I am only going by what your saying.
Ok cam dots and lines should be as follows:
Intake is retarded so that the dot is before line or at 11:00 oclock when looking at it from sprocket side.
Exhaust is advanced so dot is after line or at 1:00 oclock !
Cam timming that I did is very close to 114 degree lobe centers in following picture for intake.
All these motors were never designed with camshaft for a turbo.
Bottom line is guy, some engineer builds something mechanical and then someone thinks they know it all and can build it better or make it better.
Lots of mistakes is how we all learn so make sure you have support when buying aftermarket products or your next sled.
Why aren't you getting support from where you buying your stuff??
OK enough nagging cause maybe your other half and all your sledding buddies will be getting tired of waiting to see this awsome sled that still doesn't run right.
Start with cam timming and don't say it's done right cause something is still wrong!! High heat on header sounds like exhaust cam timming!!
Good luck guy and think about ridng before Santa smokes by ya!
Merry Xmas!!
 

Attachments

  • Apex cam timmingsm.jpg
    Apex cam timmingsm.jpg
    370.6 KB · Views: 134
mulot30th said:
What puzzles me the most is the fact I had 10-12in-hg of vac saturday morning, and got down to nothing during the dyno day....

Can it really be a head gasket leak uniformly on all 4 cylinders a same time?

Did you locktite the bolts on your intake cam gear? Maybe it was fine when you installed it, but has moved since. Your symptoms all suggest cam timing is out.
 


Back
Top