2000Si-at-UK

I have the Greddy kit on my 2000 Si, and I have been running 7 psi for 2 months. And starting 2 weeks ago, I turn it up to 10 of and on for fun. I have had no problems whatsoever, and it pulls incredibly hard. But I also have Hondata, and 440 injectors, and I have been tuning my setup every chance I get to insure that my fuel delivery is on point. My friend who works on Hondas knows nothing about Hondata, but he tells me that I will definitely blow my engine any day now. What do you guys think? Should I save the 10 psi for the track and just stick with 7-8 daily? I would like to build my bottom end this summer/fall and run 15 psi daily, but thats not for a while.

blueciv69

is it intercooled? also how about the head gasket is it stock or aftermarket (thick).

2000Si-at-UK

Sorry, forgot to mention my setup.

Td05h-18G turbo
Type 31 intercooler
MSD SCI, blaster, and cap
Magnacore wires, iridium plugs
Greddy Type S BOV
AEM FPR
AEM Fuel Rail
RC 440 injectors
Hondata Heatshield gasket
Hondata 2b with datalogging
Random Tech Cat, Greddy EVO exhaust
Greddy Turbo Timer, and Greddy Profec B
Fuel Pressure, A/F, Oil Pressure, and Boost gauges

Engine is stock, including the headgasket


[Modified by 2000Si-at-UK, 7:30 PM 3/21/2002]

philo

The stock ring landing are the weakest point on the motor. If you went with just a forged piston on a well tuned setup you would probaly be safe at 12-14psi. I personally would not run more than 10psi on a stock motor on <93 octane gas.

2000Si-at-UK

I never run anything other than 93 octane, and really don't get on the car too much, unless I'm taking someone for a ride. A Cometic headgasket was recommended to me by someone, but I don't know much about them, and I plan to drop the compression this summer anyways with a JE/Eagle setup. As for the boost, I have my boost cut-off set at 10.9, and the highest I have seen in a datalog is 9.6, even though my gauge reads ~10.5.

Mr. Vapor

8.8 JE?

2000Si-at-UK

I was thinking 9.5 or 9:1. Or were you just referring to the most played out joke I've ever seen?

philo

That would be JE PISTON and EAGLE ROD.

If you will only be running 93 you may want to drop your compression a little lower. This is a well debated point but I personally went with 8.5:1.

blueciv69

OK you can run 12 psi on your block with a 81mm X 3.0mm gasket but make sure it has metal rings where the cylinders contact the head.. and 12 pounds only comes with proper tuning also a block guard is recommended. 440 injectors or better and fuel pump beware of fuel cut off instant toast. Retart timing 1 degree for every 3 psi of boost for max safety. and also 8:1 fuel ratio(doh) if not more!. I have done this to several cars and they are still running after 30k all but one, but he played with his tuning and dumped a 50 shot up on top of that. dipshit! your stock sleeves can handle 26psi only for limited use with a good intercooler setup (track runs). but the most I would run on stock sleeves is 18psi const. (of course only with internals.. 8:5:1cr JE crower rods & block guard)

I have gone through at least 6 blocks all b16a and found these through trial and error.

"Son its not what you put into the snail its how you cook it"


[Modified by blueciv69, 8:57 PM 3/21/2002]

2000Si-at-UK

Anyone else running this much boost on a stock B16?

boosted hybrid

You can safetly run 10psi on 93 octane pump gas tuned. Anymore you are pushing the capablities of pump gas to control detonation.

As far as the previous post goes, you are just lowering the compression ratio using a thicker metal headgasket, thereby making less power at 12psi than you would with the stock compression. Yeah you are able to run more boost, but it is a trade off between creating more turbo lag and having a narrower powerband, and essentially less overall hp.

The air/fuel ratio of 8:1, jesus that would be insane. The car would start bogging down so badly at like 10:1 air/fuel ratio, 8:1 would just be dumping so much fuel into the combustion chamber and pushing it right out of the exhaust giving you high egt temps. Keep the air/fuel in the 11~11.5:1 range with stock compression and take out timing throughout the boosted powerband.

On 10psi tuned you should making close to 300whp, which is plenty if the car is your daily driver. Hell i didnt have traction when my LS engine was making like 250whp, let alone when i upped the boost to 18psi blew the sleeve, but was making like 350whp for a few days.

2000Si-at-UK

Thanks for the reply. I doubt I'll be close to 300 whp @ 10psi, but that would be very nice. I'm thinking that I'm probably closer to 240 or 250. Maybe once I up the boost to 15 psi I'll see those kind of numbers. I'm not gonna invest in a headgasket, because I plan on investing in the JE/Eagle combo this summer anyways. I'll just stay at 10psi until then. Thanks guys.

LsTurbo91

I think he meant 8:1 vortech FMU disk