I'm in the process of building an integra LS motor to run a redline of 10000 rpms. I've been told by a friend he had read about a LS spoon motor built to run close or more RPMs and there were two main things that needed to be addressed. The first one being an upgraded oil pump. Unfortunately he does not remember the second "crucial" aspect that needed upgrading.

My question being does anyone run this and or encountered any problems or happen to have read the same thing my friend has?

Doing the bottom end now and the top end in a year or so. Thus far I've got forged pistons/rods, rebalanced crank, a crank main gurtle, a block guard. Haven't purchassed an aftermarket oil pump yet (suggestions welcome).

 

Its going to be hard to get it to there without balancing the the complete rotatin assy. As for the oil pump you I would say go with a dry sump if you really plan to rev it to there but then you have to make sure your motor is set up to make power up there. You may be able to rev it that high but you power drops off at 8000, so what would the 10k rpm be good for?Just because you got rods and piston will not ensure that your motor is strong enough to take that abuse. Just my 2cents.

 

To Rev a LS motor out like that.. you will need a Nice head.. a non vtec head is not going to make it 10k rpm.. gonna need a vtec head.

as for the bottom end.. you will need to upgrade to a gsr oil pump. As for the other main thing that need to be upgraded to even attempt a 10k rev.. is bigger rod bolts.. .. note that word ATTEMPT.

Good luck with all that...

 

You will be driving over the rocker arms....

 

I know the head will need many solid aftermarket parts. My plan is to have JG engine dynamics to do the head for me.

For those nay sayers as far as being able to take advantage of that kind of a red line or that I could even do it on an LS head---

**Most of the built head set ups I've researched say their main power increase is 7k to 10k
**Many aftermarket intake manifolds, throttle bodies, as well as cams also say they have the most power increase around that rev range
**The integras that used to run SCCA world challenge would run 9k on stock internal GSRs
**Last and not least...everyone knows spoon can run the things up to 13k with their built long blocks why wouldn't it be feasible that I could do 10k

Since I'm doing just to bottom end currently, all of it's rotating mass will be balanced. As far as set up to make power up to that red line...reprogrammed computer plus intake manifold, throttle body, cam, injectors, springs, retainers, port and polish....and so on will be addressed with the top end upgrades.

Thanks for the concern though...hope I don't sound like a child saying "uhh huu".

 

that is all.

 

10k on a vtec head is no big deal,but have you even looked at a LS.The rocker arms "rest" on a ball adjuster,go under the cam and push the valve tip.Any valve float and the rockers "fall out".They work reliably to 8500 or so but are very sketchy beyond that.

 

I know exactly what your talkin about.

JG said that a 10k redline wasn't an uncommon build for them on an LS motor. Perhaps he mis-spoke and ment GSR. I will call them and drill them on it.

ohh yea....it's a b20 head not that what your talkin about is any different with that head

 

jg

they used to be good..... but not anymore.

I bouht a JG head, had Endyn completly rebuild and touch up the ports.

I bought the JG head, and hten regret it. Since i didn't research in the first place.
I spent twice the money i should have to not have a JG head.

Ive heard all sorts of stories about Javier ( JG Guy)

Id try Earl w/ Portflow
RLZ Engineering
Endyn
Good luck w/ build.

 

I hope that you plan on addressing the non rev happy rod stroke ratio of the ls motor, great for low end torque, bad for high revs.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by NJIN BUILDR &raquo;</TD></TR><TR><TD CLASS="quote">10k on a vtec head is no big deal,but have you even looked at a LS.The rocker arms "rest" on a ball adjuster,go under the cam and push the valve tip.Any valve float and the rockers "fall out".They work reliably to 8500 or so but are very sketchy beyond that.</TD></TR></TABLE>

Listen to the man.

 

emm well....When said and done I will probably losing a fair amount of low end to compensate for power. It is all about the air and fuel flow. As far as rev happy. The transmission set up I have plus the lightened internals will make it a really quick rev up so low end loss will not be as crucial.

 

I don't think I follow your logic on spending twice the money not to have a JG... wouldn't it have been cheaper to start over with a new head in such a case. I guess thats kinda dependant upon what kind of head your using (I can currently get two LS heads and a block for free).

I'm intresed in the head work you spoke of though. Just as I have researched most of the bottom end work I will be doing the same with everything else I touch on the car because I like to do it right the first time. I don't make enough money to eat a mistake like you got yourself into. I guess what I'm tryin to say is any insight you can give me on the research you have done would be great.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by RKSskier &raquo;</TD></TR><TR><TD CLASS="quote">I hope that you plan on addressing the non rev happy rod stroke ratio of the ls motor, great for low end torque, bad for high revs.</TD></TR></TABLE>

exactly.

 

genius post man....how about some logic on why what I'm doing won't work....

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Creator &raquo;</TD></TR><TR><TD CLASS="quote">genius post man....how about some logic on why what I'm doing won't work....</TD></TR></TABLE>

the ls has a 1.54 r/s ratio. Yeah it could be done, there's no doubt about that. But that 1.54 ratio is what's going to hinder you the most. 10k on a b16 with a 1.72 (or maybe it's 1.74?) regardless the b16 r/s = perfect high rpm ownage.

if it were me i'd just turbo it. but then again people see my y5 project and say "why not just go b-series" *shrugs

 

not that I am trying to bash you or your idea by any means. But in my humble opinion, when starting a project without having a very good foundation (r/s ratio) I can forecast lots of frustration.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Creator &raquo;</TD></TR><TR><TD CLASS="quote">genius post man....how about some logic on why what I'm doing won't work....</TD></TR></TABLE>

If you could keep the rockers in place at 10k you will run out of air flow long before that.The air goes supersonic and becomes very unpredictable.If the engine makes 240hp at 8200 and 200hp at 8700 for example why would you try and turn it 10k.Some people try and do things the hard way.I'd rater drive my car than push it.But I'm not saying it can't be pushed.
Glenn