shanerv

def a tuning problem. and you should be traping way higher with a crx and that setup. I got a stock ls at 13 psi with no tune and that out runs you and I rock a 93 hatch. so you under weight me even. the guys are right either timiing or your blowing a ton of hot air.

daily driver

ls on boost is prob gonna have a bit more torque than my turbod........but thats beside the point

car weighs in at 2k lbs w/o driver

i know every car is diff but is there and "average" or "typical" range for ign timing in boost at higher rpm's?


thank you.

$30 worth of outdoor lawn furniture rattle cans and bout 5 hours on a fri night..........looks good enough for me

Minor Threat

Depends on what program you're running.

Figure around the 10* mark for starters.

daily driver

at 21psi im at 11-12* in the higher r's..........BRE bin file is attached, if anyone cares to check it out.

a few theories i have:

1.boost leak.....everything is sealed up tight, piping is secure, throttle shaft possibly? turbo housing itself?

2. IC too small, restricting flow?

3.turbo itself is not sized well for engine........looking for comp map, but turbonetics site is undergoing changes

Hitchhikkr

This is important.

You set the crank and cam for TDC, but did you loosen and adjust the cam gear with full tension on the tensioner?

The mystery overheating suggests retarded timing, assuming you have already ruled out the basic tstat, rad. cap, etc.

1. Very likely, small leaks (throttle shaft, etc.) wont have that much effect. Make a pressure test setup to be sure.

2. what IC inlets/outlets, how large?

3. At what rpm does it hit full boost? Too bad you dont have a dyno graph at this point it would help diagnosis.

daily driver

cam/crank were both set to TDC w/o belt, cam gear loosened, belt installed, tightend tensioner, tightened cam gear...............in that order

i have replaced t-stat w/ new Honda stat, water pump, HG(cometic+ARPs), has Fluidyne 1/2 rad, 10" fan........which was just replaced after being suspected and finally failing (locked up)...........even have custom gravity fed overflow setup.

1.boost leak check will be done ths weekend

2. 2.5" in/out

3. around 5-5.5k, depending on gear. had a dyno graph for the 10-12 psi range, but that doesn't really apply here. independent shop i used to work for had a mustang dyno, was a nice fringe benefit, but i left to go work at a Honda dealer.............what did i do? :1


thanks for the ideas and help so far

daily driver

i'll try to keep this short, figured you guys deserved an update


got some free dyno time from the guy i used to work for, so i pumped in some 110 and said ---- it........MORE TIMING!!
problem was in the tune, added bout 8-9* of timing to the boost maps......which left me at approx 20-22* in the upper rpms.
gained about 50hp on a mustang dyno.........end results were 281hp/230ish ftlbs @ 19psi...........kinda low, but it was on a mustang.
i would have cranked that ---- to NOG, but i maxed out my EBC......need new WG spring, have low psi spring right now


end result.........


first pass at the track......11.98 @ 120
backed it up next pas........11.86 @120

went to the track the next weekend w/ some cooler air and made about 10 good passes.......all in the high 11, 12.0, 12.1 range @ 120-122 mph

personal best to date.......11.74 @ 122

taller tires and more boost on tap for next season, could only cut 1.8 60' with those tires, and 4th gear is bout done for by the time i hit the boards

thanks again for all the input nig nogs..............she's finally hittin the numbers i was looking for, well its getting there anyway