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help with a 420 turbo
Posted:
Mon Sep 29, 2008 6:25 pmby bravesrule8
i have afully built 420a turbo motor i am having problems either tuning it or something...i have the car running 12-13psi boost and the car seems to well the motor kinda bounces at times around 45-5000 rpms and wont rev for a sec or 2.. also the car will not go over 1205 it just dies there and wont go... does anyone think this could be a timing issue..
when i buil my motor i have a hahn turbo and hahn portfueler for fuel system i talked to there tech support to build my motr.. my car is bored .20 je pistons 8.8-1 eagle rods crane cams crower springs does anyone have a clue what i could do or anyone able to look at it for me i live in brookfield
Re: help with a 420 turbo
Posted:
Mon Sep 29, 2008 10:31 pmby BOOST3DWRX
NICK where are you! Help him!
Re: help with a 420 turbo
Posted:
Mon Sep 29, 2008 10:43 pmby Nick Serra
Yah definitely check timing first. It is idling ok? Are these problems only happening when you get into boost?
Re: help with a 420 turbo
Posted:
Mon Sep 29, 2008 11:30 pmby njrupp
guru nick work ur magic
Re: help with a 420 turbo
Posted:
Tue Sep 30, 2008 2:02 pmby bravesrule8
the car idles perfectly fine in my eys i only have problems when i try to get on it i just dont underst5and
Re: help with a 420 turbo
Posted:
Tue Sep 30, 2008 5:17 pmby Nick Serra
Might have a massive boost leak. Check timing and do a boost leak test first.
Re: help with a 420 turbo
Posted:
Tue Sep 30, 2008 6:55 pmby bravesrule8
how do i check for a boost leak
Re: help with a 420 turbo
Posted:
Tue Sep 30, 2008 9:32 pmby Nick Serra
Re: help with a 420 turbo
Posted:
Wed Oct 01, 2008 7:18 pmby runDSM
DSM's are a fuckin nightmare. any prob you gotta just start from scratch, check timing- most dsms run great with everything zero'd out so dont worry about all the fancy advance/retand crap. gotta have sufficiant spark. pretty sure 420a coils are gonna need a CDI box as well as the coldest plugs you can get. boost vacuum leaks are a constant headache, make a checker out of a coupler, PVC pipe and cap.drill/tap 2 holes 1/8npt in cap, insert psi gauge in one and a valve stem in the other, apply to turbo inlet and fill just as you would a bike tire. MAKE SURE YOU HAVE ENOUGH FUEL!!! you may be experiencing a slight detonation if its kinda poping at WOT. i dont think you have to wage war with the ecu feul cutting since its a 420a, ive never touched one.
Re: help with a 420 turbo
Posted:
Thu Oct 02, 2008 7:17 amby RSbeast
If this is the same car, I've already talked to you at T-bell.
The turbo is GONE, and the bov/boost controller isn't hooked up correctly. The bov never gets a signal to let off so it just stays closed and compressor surges to death. Fix the turbo, and the issue and then try messing with stuff. Fortunatley the blister on my finger from grabbing the shaft has since gone away
