RPM's on the 1J?

[DaSuprawolf]

please tell how high you take your 1J and your supporting mods.
thanks!

 

[tissimo]

I reved my 1jz to 7600 with crower 264 (272 small cores)... I didn't have springs/retainers, and it wasn't my engine any more so I didn't want to push it.. I dont think it would of made any more power above that though..

 

[DaSuprawolf]

still pullin' at 7600??

 

[Ric]

I've been paying more attention to my revvs this last week. My gauge is off (sc3) so I started reading my SAFC2 more, it seems accurate. I float mine at 7880ish rpms @ WOT. I've gone over 8, but not at WOT. It's very easy for me to over-revv with the GT40 and auto transmission. I normally keep it no more then 7000rpms top. I've been doing this for a year now.

Stock cams, springs, retainers.

Rudy @ MTR brought his 1jz testbed motor to 10k rpms on the dyno, but the power feel off alot. He said with JUN cams, it pulls nice to 9500.

 

[annoyingrob]

I rev mine to 7500 regularily, but even with cams, the stock twins drop off after 7k.

 

[OneJSupra]

wow at 7500 regularly, that's insane but cool. I rev it to 6k occasionally and but haven't had a chance to punch it at around 7k , don't know maybe I'm too nice to my 1j.

I rev mine to 7500 regularily, but even with cams, the stock twins drop off after 7k.

 

[csnow]

Thanks for taking it easy on my motor Tissimo

 

[suprahero]

I rev mine to about 7300 when racing and it doesn't seem to fall off. I have 272 small core cams with stock springs.

 

[DaSuprawolf]

this is so exciting! cant wait for MY 1J!!

 

[Van Diesel]

I thought the stock springs were good to 8500?

 

[conundrum07]

OT but, what are you guys using to bypass the limiter? I keep hearing its low 7200 or so stock.

 

[csnow]

Standalone or aftermarket ECU like a Blitz or Sard.

 

[conundrum07]

I suspected about as much, I just wasnt sure if there was a piggyback that could do the same thing. Thanks :biglaugh:

 

[Ric]

I thought the stock springs were good to 8500?

I thought so too, but I was watching my car's tach, not the SAFC2... ever.

Reading the SAFC2 playbacks it's floating at 78xx.

 

[annoyingrob]

I rev mine to about 7300 when racing and it doesn't seem to fall off. I have 272 small core cams with stock springs.

Yeah, that's what I run for cams too. Here's a stock boost run I did with them:

Honestly, there seems to be no problems with the motor other then the fact that I know my rod bearing clearances are too big, and they're been like that since I got the motor. It's going down for a rebuild in a week so I'll take a look at it then, and see what it looks like revving to 7500 all the time. It sure does sound nuce up there though.

 

[suprahero]

I don't know where the dyno picture is, but my last dyno pull, I made 446 rwhp.

 

[csnow]

What ended up being your problem suprahero? I know you were in the mid to high 3's and were looking at timing, fuel, and some other grimlens. NICE numbers!

 

[Van Diesel]

High 3's?

 

[csnow]

High 300's. I just abbreviated....sorry for the confusion.

 

[Erkenz]

Those were nice numbers for stock boost! I have hit the rev limiter several times without problems, but I would be affraid to eliminate the limiter for fear of going past 8k...