[Spoolin Turbo]

Well since the search isnt working I am force to ask on here. Anyone know what you can rev the crower springs and titanium ret's up to on a GTE?
Thanks ryan

 

[Bill P]

~9300 rpm @ ~36 psi. More than either of those numbers and you need duel Ferrea.

 

[Spoolin Turbo]

is that personal experience?

 

[Bill P]

Almost. I've gone up to 9200 rpm and 35 psi as a safety margin. Everything was fine.

 

[turbotito121079]

what can you spin the stock motor to will it handle 8000k with the crower spring setup

 

[6ick6]

Shoot, I thought more like 8500 max on the stock head plus crower hardware.

Is it possible to rev 9200 rpm on a stock oil pump (unmodified)?

 

[Bill P]

I rev to 8500 all the time and no problems yet.

 

[MissSupra]

~9300 rpm @ ~36 psi. More than either of those numbers and you need duel Ferrea.

9300???? Thats very brave and agressive. I have a fully built $20k engine with dual ferrea, billet crank, you name it, and it wont see a tick over 8k rpm.

I truly wonder how long these engines spinning to 9k+ are really lasting?

 

[blkdawg]

I spin mine to 8500 all the time and sometimes 9000 in first gear to get out of hole... I'm running the crower setup and stock block. It's been fine for about 2 years now.

 

[93 twintrbo]

Ive been to 9850 rpm on stock longblock (with bent rod) and multiple 9k revs over 11/2 years and the bent rod bearing finally failed.

 

[Northstar]

This is awesome to hear about Crower setup.

 

[MissSupra]

:nuts: :x: ohnoes:

 

[Spoolin Turbo]

wow seems like for a single springs these are good for 9K. I was thinking of only going to 8K or 8200. I think i might go up to 8500 now.

 

[Bill P]

High rpms will hurt the bearings and should be avoided. But, some times it just happens to me in 1st or second gear. Actually, most times I get on it. I now have my rev limiter set to 8700 rpm, but have seen up to 9200 in aem datalogs before. My engine has been doing this since 2001 and still works fine.

 

[suprab808]

What is the price difference between the ferrera and Crower? What cams are you running Duration and Lift?

 

[SoarerTT]

^^ More than double since you have to buy the springs and retainers seperatly.

 

[Hands On]

Alright pansies, the stock rev limit is somewhere around 7350-7400. With my AEM, tuned by John Reed, my rev limit is set at 8K on a bone stock long block. You have to realize that manufacterers set the particular limit based on warranties and longevity of their products. Don't know if you know this, but my warranty is up. So botom line, with the stock spring tension and turning up the wick a little, my stock springs don't start to float up to 8k. If you are to go out and buy some high performance aftermarket springs that you feel can't rev farther then stock, then you are wasting your money and have been bench racing all your life. The Crowers are good up to 9k+, dual springs 10+ but there are other limiting factors that won't let you go past that and not the springs.

 

[Spoolin Turbo]

my warranty isnt up....lol....good info here guys.

 

[turbotito121079]

will the 2jz with the acl race bearing and crower valve springs and retainers and arp main and rod bolts be ok reved to 8000k everyday

 

[suprab808]

Alright pansies, the stock rev limit is somewhere around 7350-7400. With my AEM, tuned by John Reed, my rev limit is set at 8K on a bone stock long block. You have to realize that manufacterers set the particular limit based on warranties and longevity of their products. Don't know if you know this, but my warranty is up. So botom line, with the stock spring tension and turning up the wick a little, my stock springs don't start to float up to 8k. If you are to go out and buy some high performance aftermarket springs that you feel can't rev farther then stock, then you are wasting your money and have been bench racing all your life. The Crowers are good up to 9k+, dual springs 10+ but there are other limiting factors that won't let you go past that and not the springs.

So what would other limiting factors be if you have proper fuel????