hey guys, now let me start out by saying ive read most of the essentials, and I am asking your oppinions, my goal is all motor like the title says I know its the hard road, and thats fine, I know I wont get 900hp I dont really want that. the car is a 92 lude si, Im not driving it right now its sitting there. Im driving my 240 as a daily driver, my goal is about 220-250 range, thats it.(Iknow thats it?) right. any ways. the questions are 1) where to get the headwork done, im good at mechanical and electrical but ill leave that to some one with experience.2) im thinking about 11.5 comp we have 93 octane here and that seems like a reasonable #, what kind of pistons, brand and such are out there( I would like forged) 3) sleeves I know about the forged pistons, you need to sleeve. what brand and where to get them, I live in Charlotte NC, I would also like to hear about machine shops in the area that do good work from personal experience thanks in advance guys

 

Send your motor to PrecisionH23a.

 

do they have a website? have you had any personal experience with them? what work was done? just curious

 

Actually he's a member/moderator on this forum and has helped me out a lot with some of my tech. questions. He does full motor builds and such. Maybe he'll see this and contact you.

EDIT: he's also one state away, which is the original reason I stated to send it to him; he's local, and he's good.

 

thats great man, I really appreciate that, and yeah nissans do love boost, thats why im going all motor on the lude, the 240 is going turbo, I know a little about the nissans if ya want some info on that

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by chandler &raquo;</TD></TR><TR><TD CLASS="quote">hey guys, now let me start out by saying ive read most of the essentials, and I am asking your oppinions, my goal is all motor like the title says I know its the hard road, and thats fine, I know I wont get 900hp I dont really want that. the car is a 92 lude si, Im not driving it right now its sitting there. Im driving my 240 as a daily driver, my goal is about 220-250 range, thats it.(Iknow thats it?) right. any ways. the questions are 1) where to get the headwork done, im good at mechanical and electrical but ill leave that to some one with experience.2) im thinking about 11.5 comp we have 93 octane here and that seems like a reasonable #, what kind of pistons, brand and such are out there( I would like forged) 3) sleeves I know about the forged pistons, you need to sleeve. what brand and where to get them, I live in Charlotte NC, I would also like to hear about machine shops in the area that do good work from personal experience thanks in advance guys</TD></TR></TABLE>

Do a search, and it'll take some $$$. I'm sure the setup below will hit at least 220WHP on most dynos.

HEAD:
1. Get the head ported with a good valve job.
2. Upgrade Valvetrain (Portflow?)
3. Run Good Cams (JUN3? Skunk2 Stage II?)

BLOCK:
1. Sleeve It 89mm (Might as well. I think 90mm is too thin)
2. Stock Crank is Fine (Maybe a torquey H23A Crank?)
3. Aftermarket 89mm 11.5:1 - 12.0:1 Compression Pistons (Wiseco?)

Now you just need to supply it with good air with a nice 3" Intake, STR Throttle Body, and a better intake manifold (Euro R, Skunk2 IM).

Then the air needs to escape with a good 2.5" (at least) exhaust system and a good header (Prospeed/AN-R/KTeller, SMSP, Hytech).

With the added air, you need the added fuel. Ugrading fuel injectors and FPR would be good.

Last but not least, TUNING!

 

Seriously NA --&gt; add Individual Throttle Boddies to your intake manifold list. They make an additional 8-15 whp over most IM's throughout the whole powerband. And they sound SICK. hehe Good luck man.

 

Thanks for the props Jaded.

Right now I actually have about 4 other cars from NC at my shop and I'm going to pick up another one this weekend I don't know if you know Jonathan with the white turbo prelude but I'm doing his full rebuild right now... he's aiming for about 500 to the wheels.

As far as NA goes, I can provide you with your goals but it's not going to be cheap. Headwork and valvetrain components alone are going to put you upwards of $2,000. Fully assembled darton sleeved shortblocks run $2600. 220whp NA will also require an LSD. You can go with the phantom grip with a stiffer spring for around 300ish or fork out and get a quaife which is around the $800 range. 89mm pistons are a good idea but that will require a custom piston which runs a little extra. I would try and run a 12.5:1 compression since 93 pump is available to you as well.

I would also fork out the dough for the Hytech or SMSP header with one of my custom 3" exhausts.

You can see some of my work at http://www.av-engineered.com I have some prices listed on the site as well. My contact info is also listed on the site. Thanks.

 

thanks man, I didnt know if I could run that high of a comp, I know this is going to cost a lot, and im not one to cut corners, ill get the quaife,aren't indevidual throttle bodies a little over kill though for only 220? do you have any sound clips for your exhaust? where can I look to get one of those headers? ive been searching for a week, all of your input is very helpfull thank you

 

ITB's are a little overkill. What I would recommend is running the AIR carbon fiber intake manifold. Again, those are not cheap either but the results you'll get with it are unbelievable. They are around the $1,300 mark. I can get those as well if you need one.

I don't have any sound clips from an NA set-up... all of mine are turbo.

 

do you have a link to this mani??

 

i made 217whp with a stock bottom end i got the headwork @ JG i used skunk2 cams,cam gears from camp1320.com hot shot headers and hondata, the rest was stock i hope that helps you a bit..

 

do you have pics of this intake manifold?, what does the exhaust look like? is it stainless steel? do you have a reccomendation for cams that make the most power? I know that cams are all different, im just asking your professional oppinion. And what kind of deshrouding will you do to the cylinder head, I know these all are random questions, but my head is scattered at the moment

 

Right now it sounds like if you've got the money to throw down, you can hit 230 whp with the parts that are now available. NA is not a cheap route to go but I think it's nice to see some nice NA setups again. NA hp for hp &gt; than turbo hp for hp to me.

 

exactly, read my sig.....

i think im just eventually gonna go for

some way to get about 12.5 comp on the frm sleeves
jun cams/vt
p&p head
have yet to decide on im or itbs

any input? i hope to hit about 230-240 whp

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by chandler &raquo;</TD></TR><TR><TD CLASS="quote">do you have pics of this intake manifold?, what does the exhaust look like? is it stainless steel? do you have a reccomendation for cams that make the most power? I know that cams are all different, im just asking your professional oppinion. And what kind of deshrouding will you do to the cylinder head, I know these all are random questions, but my head is scattered at the moment
</TD></TR></TABLE>



It is carbon fiber except for the aluminum flange for the head/throttle body and vacuum ports. It will not make much more peak power than a box plenum manifold or one similar to the skunk 2 but the midrange you pick up is unbelievable.

The exhaust uses the Apexi N1 muffler and you have your choice of mild steel or stainless steel. 2.5"-3". Your choice. I'll have some pictures up later

I am a fan of Jun cams. Skunk 2's work also.

I do not do cylinder head porting in shop. I typically send heads out to Endyn, Portflow, or RLZ.

 

Thats a lot of money for a mani. How much better is than the Skunk2/Euro-R manis?? where are the gains??

 

thats a sick mani.....f*cking expensive as hell too....porb well worth it tho.

 

Don't forget, you're gonna need a good engine management system
and a good tuner as well to run 11.5:1+ on pump gas

 

I thought I had seen that manifold gain something like 40hp on a turbo vehicle on this site. - Maybe I'm wrong, I didn't feel like searching it.
Also, why would a 2.5 to 3" exhaust be suggested. If someone wants to run an H22 all motor - wouldn't 3" be overkill? Not to mention - you use huge 3" piping, then the N1 muffler is what, at the most 2.3" throughout? I don't want to hate - I'm just confused.

 

I know on all motor SR20VE's run 3 inch exhaust, they need it, and theplenum looks sick man, what diameter throttle body goes with that? and what do you think of removing balance shafts, I know its debateable, but as a personal oppinion? what about pullies? And that wasnt meant to start a war, just curious as to your personal experience. What do you think of the AEM EMS? Should I just email you?

 

On high power NA cars a 3" can actually help you out. You are more proned to lose a little bit of torque though. If you are running a stock motor then of course 3" will not give you enough backpressure and hurt your power. The apexi n1 cannisters come in an assortment of sizes, and yes 3" is available.

And yes, the boosted car on this site gained 40whp over its midrange. Turbo is a different game than NA but you get the point.

 

what kind of motor mounts do you reccomend?

 

What is considered high horsepower for an NA prelude?
I stand corrected about the N1. oops, I forgot.
Also - I went to AIRs website and I can't find anything about the manifold for H22's. I could have sworn I had seen it done before. But I can't find anything on their site.

 

Not to step on "PrecisionH23's" toes, as he is an exceptional individual, but make sure you do all the research you can about the path you want to take. Make sure NA will give you the power you want, or if boost is a better option. Either way a "correct" build will cost you a bit, so be ready.