The other night we decided to turn up the boost and see what happened, so we turned it up and datalogged some highway runs. We noticed that the boost went from 10.5 psi at 3700rpms to 14.7 psi at 4000 rpms, just 300 RPMS later Needless to say 18.7 psi came on real quick and at 80mph in 3rd gear we broke the tires loose and began to go sideways... Not cool..lol We only ran it to about 6000 rpms and got out of it quick, real quick..The car has a built bottom end and a 3" SFR exhaust, and is tuned using a UTEC.
The datalogs showed a few counts of knock at around 5000rpms but nothing after, even at 18.7 psi!! The AFR was 11.3-11.7 and just started leaning out to 12.3 at 6000 rpms where the injector duty cycle neared 90%+.
The car felt simply uncontrollable at 18psi and was most likely putting down well over 600hp based, since it was putting down 530whp at 14psi...
We plan on getting it to the dyno and tuning for 18psi and see what happens to the motor since we have two sleeved blocks sitting at the shop waiting to go in, with a set of fully worked heads..

 

awesome... get it on the dyno and see what happens

 

Awsome Stuff put thay thing on the dyno and lets see some numbers.

 

+1

Then go for broke and 20+psi that baby

 

Thats nice cant wait to see that dyno

 

He he..Will do!!Were going to add 116 race fuel..LOL

 

I think you can hit 800 before blowing anything!

 

800 DAMNNN CRazY for a Z street car... DO IT haha please post dyno's asap... If the numbers are good... Im heading down ASAP!!!! pm sent

 

Not on the stock heads, however we have one car were finishing up in February that will be a 900 hp tank.Fully sleeved,Ferrea 1mm oversize valves,port polish race heads,cams,Corillo "H" beams,CP pistons, everything has been coated, the works basically.We will be running about 18-20psi or more on the SFR TT kit..
The tricky part will be engine management,fueling,injectors ect...

 

kewl!

 

My car now is about 600-650 at 18psi..800 is a big difference and we have something in the works for that.. On our "other" shop car...

 

The most ive seen on 116 was 667hp@20psi, The fuel pump i guess ran out of gas, when that twin set-up comes, Oooh-RiiiGhT. Good luck would love to see 700hp

 

Are you still running your APS TT?

 

Yup..We added a 3" exhaust since and the turbos seem to come on sooner and much harder.We were running an APS 2.5", but the 3" makes a world of difference up top also. However I do not suggest the 3" on a daily driven Z, you will go nuts or get tickets.It is VEEEERY loud..

 

im still wondering how youre gonna solve the head lift problem, at 20psi and 800hp the heads are gonna fly off.

 

Who has this happened to so far?

 

You guys could be the first! Blow that baby. I wanna see what you can do with that sleeved block.

John (wishes he was in New Jersey) Nothing out here in Virginia

 

Well, either way you put it, this car is "gonna turn some heads" *hopefully people only

 

its happened to a few people on the boards, sharif is one, the other person had a G35 coupe, phili-something, the maroon Z from Jotech didnt have the problem tho, his made 667hp, i think they were saying it was less of an issue with sleeved blocks. ill try to remember who else it was.

 

I personally saw that car do about 60 dyno run, and there is still RD being Done, the Z had no headlift, and yes it was a aebs block