Just want a rough est. of how fast this car will run? My buddy
says it hits low 13s, I have doubts.

98 EK shell, all stock, full interior.
GSR motor, nothing else but set of CTR .25 over pistons (all machine work done
but nothing adds hp other than the pistons) Stock head, cams, valve train.
Still runs GSR manifold and stock P72 computer, OBD-II. Has a intake, DC 4-1
header, and stright pipe, 2.5" piping exhaust.
What do you think? low 13s? high 13s? (assume on slicks) How fast on street tires
otherwise? Will this motor even see 180hp at the wheels? Thank you.

 

on street tires...i'd guess low 14s/high 13s depending which track.

-Rod

 

agreed, id say low 14s more than likely.

 

Open header with slicks I can see that car running 13.50s' maybe better with the right conditions.

My 99 EK hit 13.60's with 163 whp and drag radials.....only rev'd to 8K on 10.6 comp

GSR with CTR pistons is low 12:1 comp depending on head gasket etc...SO I would assume a GSR with that comp could make 163whp or more.

With 175+whp and shifting at 8500 I think I can hit low low 13's/ high 12's (if I get lucky) so its more than possible......

 

thanks guys.

by the way, the car only did 14.5 on street tires before the motor internal change. (ctr pistons)

 

low 14's. 13's with slicks

 

dont u have a ITR motor??? quite a bit difference between a GSR with high compression and a ITR motor even if hte ITR is stock.

 

if the guy had an ITR tranny, it would run 13's.
cause it probably has the same hp as a stock ITR.

 

the pistons themselves on a stock cam willl do very little.
what the increased compression allows you to do is run a larger cam which in turn should make some nice power for you.
built well, low 12s on slicks should be easy.

 

dont u have a built motor w/ JUN3 cams. how do u expect him to post up low 12s when u havent done it???? no offense, just trying to get a viewpoint on where ur comin from.

 

yeah serious, this isn't a little EG hatchback.

 

My dyno runs were rpm limited with Si ecu (less fuel/less timing) and I was running a tiny DC 4-2-1 2" collector header....not exactly ideal for power

At 12:1 comp his torque is going to be increased SIGNIFICANTLY over stock 10:1 compression in a regular GSR motor....most GSR's with light mods can crack 150-160whp at stock compression....with pistons 163whp should be childs play.

I will stand by and say 13.50's with traction and his setup....maybe its driver but I dont think its that hard to run 13's with that setup if its launched properly.

Now depending on which track he goes to the slip may not read 13.50 but generally you can at the very least subtract a tenth for every thousand feet up....or you can use the NHRA conversion table to convert the runs to sea level conditions.

 

he has a '00 SI (B16A) tranny, stock gears.

 

yep. EG and EK, big differencfe.

 

is 130lbs really a big difference? the lightest EG weights 2094 and the lightest EK weights 2222 if im correct.

 

hm... this is interesting... would like more feed back on this as i will be putting some standard sized pct pistons in my 98 b18c1.

bump

 

He's currently breaking in the motor. the CTR pistons are .25 over.
It feels good. A lot of compression. We plan to race for the next event and
see what the cars can run.