High reving?

[1fast97gsx]

I just picked up a set of crower springs and retainers. My bottom end is ross / eagle, 1g head, crower springs / retainers, hks 272 cams. I'm also using a smim and a tubular exhaust manifold. I'm wondering what the highest people have reved to safely is with setup like this. The turbo is an scm61 so I want to rev up to wherever the power starts dropping off. I have heard these springs and retainers are good for 9000 rpm+ but I'd like to hear it from someone actually using them first. Thanks.

 

[khartley]

I don't know why anyone would take their car up to 9000RPM's in the first place - that's the only reason why my car has been in the garage for the full time I've owned it.

 

[1fast97gsx]

I don't know why anyone would take their car up to 9000RPM's in the first place - that's the only reason why my car has been in the garage for the full time I've owned it.

um .. no offense but are you dumb???? You want to rev as high as your turbo will continue to make power. Now if you have a big turbo it won't even hit full boost until around 5000 rpms ( like mine ) then you will want to rev higher to make more power and stay in your powerband even right after shifts. Common sense with any turbo bigger than a 16g...

 

[TSIfreek]

The rpm you want to pull the motor to all depends on your intake and your turbo set up. The stock 1g runs out of steam at 7k and there is no sense in reving it any higher. Unless you have a magnus, BR or FRH intake and 272 cams and a big ass turbo that is desighned for that rpm keep it under 7k. The springs and retainers you have are good insurance but it doesnt mean you can rev the motor to 8500 and still make power. Stock shimed springs and titanum retainers are all most of us on this board need.

 

[Mirage2LTurbo]

I'm running Wiseco/Eagle, Crower VT, 1mm+ ss valves, HKS 272's, and just banged off 9500rpm for a good few seconds when my t/b locked open last week.

 

[sweet97]

I need to know what the acronym "smim" stands for.
9k and that big pusher would sure whine!
I am getting a 50 trim wednesday, an AGP RS49. Lookin for info on installation on a 1G. just borrowing this post as you big boys will be addessing this one andI have not found an answer to ....the install. Thanks & 7K for me thank you!

 

[1fast97gsx]

I need to know what the acronym "smim" stands for.
9k and that big pusher would sure whine!
I am getting a 50 trim wednesday, an AGP RS49. Lookin for info on installation on a 1G. just borrowing this post as you big boys will be addessing this one andI have not found an answer to ....the install. Thanks & 7K for me thank you!

smim = sheet metal intake manifold

 

[1fast97gsx]

The rpm you want to pull the motor to all depends on your intake and your turbo set up. The stock 1g runs out of steam at 7k and there is no sense in reving it any higher. Unless you have a magnus, BR or FRH intake and 272 cams and a big ass turbo that is desighned for that rpm keep it under 7k. The springs and retainers you have are good insurance but it doesnt mean you can rev the motor to 8500 and still make power. Stock shimed springs and titanum retainers are all most of us on this board need.

right but I'm saying .. I DO have a built motor and a pretty big turbo. My head has stainless 1mm os valves, 272s, crower springs and retainers, 272 cams and I'll be buying a smim before I start the car up again. Bottom end is ross / eagle and balance shafts were removed. Block was bored .020 and I'm using arp headstuds and mls headgasket. I will be running 27-29 psi on c16 the majority of the time as this is not a daily driver. I know 9000 may be a little overkill, but only my power curve on the dyno will tell me at what point I'll stop making power.

 

[sweet97]

Thanks. Sounds like that motor may need 8k with those mods. I hope the 50 trim i will have does not take the fun out of my ride because the EVO was cool in the first 2 gears, I just wanted pull in ALL of them but....9K?
I fried my ACT 2100 a few days ago and will have a 2600 installed tuesday. I dropped the clutch too high, like 6k. At what RPM would this beast launch at? mark

 

[1fast97gsx]

I launch at 4500 - 5000 but now that I have dsmlink next time I launch I will be launching at 5500 with 15 psi.

 

[sweet97]

I'd like tosee that.....ALL 4 wheels off the ground! ..

 

[turbowop]

Even if your engine makes power up that high in the revs your tranny probably won't like shifting at RPM's that high. One hurdle after another...

 

[1fast97gsx]

Even if your engine makes power up that high in the revs your tranny probably won't like shifting at RPM's that high. One hurdle after another...

yea that's the next thing I was worried about. That's actually the component I still need before I put the car together.

http://www.dogboxracing.com/services.cfm#rebuild

those guys claim their awd race rebuild with all the upgrades is good for 9K+ shifts and shep's as well.

 

[purplehazetsi]

Turbowhop, everytime i see pics of ur car it just keeps getting better and better. Sorry, i didnt mean to get off topic.

From what i understand, u can rev crower springs/retainers to about 8700 rpms safely. I wouldnt go much more on a stock tranny.

 

[1fast97gsx]

Turbowhop, everytime i see pics of ur car it just keeps getting better and better. Sorry, i didnt mean to get off topic.

From what i understand, u can rev crower springs/retainers to about 8700 rpms safely. I wouldnt go much more on a stock tranny.

yea I'm prolly only gonna go up to 8500 or so ... maybe even 8300. I just thought it'd be nice to have a solid number which is safe.

 

[DSMSpyder99]

put it on the dyno up to 7,000RPM and if your chart seems to keep making more power go to 8,000 RPM but i would not go past 8500 RPM even if your car can make more power.

 

[Mirage2LTurbo]

Turbowhop, everytime i see pics of ur car it just keeps getting better and better. Sorry, i didnt mean to get off topic.

From what i understand, u can rev crower springs/retainers to about 8700 rpms safely. I wouldnt go much more on a stock tranny.

Stock head with high lift 272s have been proven up to 8500rpms, why would you spend money on valvetrain to only rev 200 higher? I know PLENTY of people running crower springs/rets revving to mid 9's on daily drivers. I banged off 9500rpm rev limiter for a good few seconds with my car with this setup. The trannies will shift up to a little before 9, then they start hating life.

 

[1fast97gsx]

Stock head with high lift 272s have been proven up to 8500rpms, why would you spend money on valvetrain to only rev 200 higher? I know PLENTY of people running crower springs/rets revving to mid 9's on daily drivers. I banged off 9500rpm rev limiter for a good few seconds with my car with this setup. The trannies will shift up to a little before 9, then they start hating life.

ok cool ... thats the answer I was looking for. Thanks.

 

[Scrymerr]

I've revved to 8k+ on more than one occasion on stock head.

 

[ItsStockOfficer]

put it on the dyno up to 7,000RPM and if your chart seems to keep making more power go to 8,000 RPM but i would not go past 8500 RPM even if your car can make more power.

Why? I take my car to 9k on a relatively normal basis and I have stock springs and retainers. When I road race I take it to 8500 in 3rd on alot of the straights for mile after mile. I hit north of 8k every single day. I have 239k on my valve springs.

The issue for me is not really the valve springs, which don't seem float prone on our cars. I just wonder when a rocker is gonna fly off.

 

[TurboSpoolinIns]

If you continuously make power past 8.5k which is not very common unless you have some crazy cams or nitrous, the'res no reason to rev past that. Honestly, 8.5 will be more than enough.

 

[1fast97gsx]

If you continuously make power past 8.5k which is not very common unless you have some crazy cams or nitrous, the'res no reason to rev past that. Honestly, 8.5 will be more than enough.

yea the more I think about it 8500 will be the magic number. I'm using 272s and a 55 wet shot as well.

 

[pinknuggit]

A motor that takes 9000 rpm quite a bit will not last as long as a motor that sees 7000 rpm.

 

[Mirage2LTurbo]

A motor that takes 9000 rpm quite a bit will not last as long as a motor that sees 7000 rpm.

EXCELLENT!!! More theories with no practical evidence or proof!

I think I'm going to install one of those Tornado intakes on my car, I hear they give you power gains..

 

[1fast97gsx]

A motor that takes 9000 rpm quite a bit will not last as long as a motor that sees 7000 rpm.

explain yourself please ... makes no sense to me.