Fix Thread turned into Re-build thread! (built rb25 neo)

[S14-NEO]

[S14-NEO]

hey john, youll be happy to know that if you ever need to reshim your head you can right down to the dealer and get the replacement shims for it with no problem whatsoever. all you need to do is get the replacement shims for a DOHC KA24DE 97-98...they are the exact same size...thats exactly what i was hoping for!!!!!!!!!!! first thing is first though, i need to ge tmy hands on a replacement VCT solenoid. that thing is like trying to find a freaking purple unicorn for christs sake.

[sickness14]

hey john, youll be happy to know that if you ever need to reshim your head you can right down to the dealer and get the replacement shims for it with no problem whatsoever. all you need to do is get the replacement shims for a DOHC KA24DE 97-98...they are the exact same size...thats exactly what i was hoping for!!!!!!!!!!! first thing is first though, i need to ge tmy hands on a replacement VCT solenoid. that thing is like trying to find a freaking purple unicorn for christs sake.

I've got a spare purple unicorn and ill take three Rupee's for her, but no VCT solenoid. LOL. Thanks for the info on the KA shim comparison. This should be in the FAQ / Sticky section! DUDE i was looking at some of your posts and im in love with your car. I want it. LOL what clutch are you using and where did you get it? And which injectors are you using? Im really trying to make my set-up just like yours. Do you think ill be able to hit high 400's or 500hp? Im really curious. Also, your paint looks incredible! how much did it run you to have the whole thing re-done. It would be awesome if i drove down to FL some time to meet up with you.

ttyl bro

[S14-NEO]

the clutch is an exeddy hyper twin setup. honestly i cent remember where i got it but i think i got through rhdjapan.com . injectors are rc engineering 650cc. got those thru a friend who pulled them out a tt G35, i got them bad boys for 200.00 bones.the paint i had it done about 8 months ago, and far as price ill tell you but your prob not going to like me much afterwards..lol..i only paid $00.00 for it cause i helped out alot and he was the owner of the paint shop and also a good friend of mine.i also just found out about the VCT solenoid, as it turns out i can get that solenoid right thru the local dealership..i found the US conversion part number for it....here it is (#23796-4M70A)..new its around 120.00 bucks

[sickness14]

the clutch is an exeddy hyper twin setup. honestly i cent remember where i got it but i think i got through rhdjapan.com . injectors are rc engineering 650cc. got those thru a friend who pulled them out a tt G35, i got them bad boys for 200.00 bones.the paint i had it done about 8 months ago, and far as price ill tell you but your prob not going to like me much afterwards..lol..i only paid $00.00 for it cause i helped out alot and he was the owner of the paint shop and also a good friend of mine.i also just found out about the VCT solenoid, as it turns out i can get that solenoid right thru the local dealership..i found the US conversion part number for it....here it is (#23796-4M70A)..new its around 120.00 bucks

DAMN! that right there shows you its all about who you know! so did you have to convert the clutch from pull to push for that setup ? I dont want to convert it i just want a nice clutch that is meant for that trans. Good deal on the injectors! Paint ... yeah im jealous! haha. Good job on the VCT part number. I wonder what engine uses the same one? ttyl man

Im going to try and swap out a relay on my ECU to see if i can get it to power up. Hopefully it is just a bad relay. i really dont want to pull the dash to get the harness out again i got the turn signals working though!! haha.

moar pichas coming so0n.

[S14-NEO]

the clutch is still a pull style clutch, i felt the same as you do. there was a reason the GTR has a pull style versus the push, its called "better". the VCT solenoid that fits our engines is actually out of a 2001 sentra GXE 1.8 liter

[sickness14]

im going to the nissan dealership during my lunch break at work today to get a new relay for the ECU to see if that solves the problem. The power FC wont turn on so i think its the relay. I got it to come on by using another power source.

[sickness14]

ECU POWERED RIGHT UP WHEN I REPLACED THE RELAY!!!!! yes. what a relief. it was not a wiring issue after all. so that means i had a successful fuse box relocation!

and the new idea is..... I think it would be cheaper to buy another neo swap than it would be to rebuild this one. I could put a few little things on it and then just part the other out. Does this sound like a good idea ? do most people have to rebuild the neo swaps when they first get them or can i just throw the engine in, plug it in and put my intake manifold on it and call it a day? here is a motor set im looking at.

not bad for $2700.

http://cgi.ebay.com/ebaymotors..._1167

And of course the pics

[Cjmartz2k]

Glad it "Fired right up". About the rebuild, that's a tough one man. You should be able to rebuild a motor with forged internalls for less than $2700, but having a good running motor is a good thing too. I say rebuild.

[S14-NEO]

BAAAH!!...mines been in and running for a solid three years and i beat the unholy piss out of my car...no issues minus the VCT solenoid leaking that is..and when i first fired my engine up i had alot of upgrades...i never ever fired up my engine comepletely stock.

[sickness14]

Thanks for the advice. See my dilemma is... Ok its already got a .20 over bore with 86.5 mm pistons. I have read that it is unsafe to bore to .40 over and run an 87 mm piston. is this true? this is basically my deciding factor of getting a new block / entire motor. I don't want to have an "unsafe" bore of something too large for the walls in the block. What do you guys say? should i bore to .40 over or look for a new motor.

PS: my engine will never be as nice looking as cjmartz2k's engine! I love those RB25 valve covers

[l0nestar]

I like your Heritage.

[sickness14]

I like your Heritage.

...Huh?

[sickness14]

Hey Ricky @ Rawbrokerage:

Whats the deal with that used HKS Bottom Mount Cast Manifold w/ HKS Wastegate that you have on your site? What kind of shape is the wastegate in? Would that be something worthy of being rocked on my RB? I cant swing 2k for a manifold. I was thinking about doing the 6-boost mani.

-John

[l0nestar]

The Harley in some of the pictures. It's a Heritage Classic?

...Huh?

[sickness14]

The Harley in some of the pictures. It's a Heritage Classic?

OH gotcha now, i didnt know what you were talking about at first! haha. Thats my father's bike. I dont really know much about it to be honest.

[sickness14]

I think we got a little sidetracked... can ricky, carl ,darius, S14-NEO, cjmartz help me out? :

Hey Ricky @ Rawbrokerage:

Whats the deal with that used HKS Bottom Mount Cast Manifold w/ HKS Wastegate that you have on your site? What kind of shape is the wastegate in? Would that be something worthy of being rocked on my RB? I cant swing 2k for a manifold. I was thinking about doing the 6-boost mani.

-John

Thanks for the advice. See my dilemma is... Ok its already got a .20 over bore with 86.5 mm pistons. I have read that it is unsafe to bore to .40 over and run an 87 mm piston. is this true? this is basically my deciding factor of getting a new block / entire motor. I don't want to have an "unsafe" bore of something too large for the walls in the block. What do you guys say? should i bore to .40 over or look for a new motor.

PS: my engine will never be as nice looking as cjmartz2k's engine! I love those RB25 valve covers

thanks guys

[l0nestar]

I think we got a little sidetracked... can ricky, carl ,darius, S14-NEO, cjmartz help me out? :

thanks guys

Hey Ricky @ Rawbrokerage:

Whats the deal with that used HKS Bottom Mount Cast Manifold w/ HKS Wastegate that you have on your site? What kind of shape is the wastegate in? Would that be something worthy of being rocked on my RB? I cant swing 2k for a manifold. I was thinking about doing the 6-boost mani.

-John

If you look at the 'quantity available' section - says 'out of stock'.It's a good piece, just harder to come by. You just have to decide for yourself if you want a 'tuned' CAST bottom-mount manifold, or a custom tubular manifold (6boost) ? I believe the current exchange rate for a 6boost is around 1k USD.

Yes, it is worthy of your build. (Just get it cleaned and then high-temp coated before installation.)

[sickness14]

Do you think that wastegate bolted to it will hold up? Ive got a 40mm synapse right now. I guess i could sell it, or adapt it to work on that manifold. I would have to re-do my downpipe and intercooler piping to use a bottom mount again. Is the 6-boost manifold going to put the turbo in nearly the same spot as it is now?

What are the performance characteristics of log style vs tubular manifolds such as spool time and all that?

-John

[Darius]

Sorry but can you refresh my memory on why you need to rebuild it again? I can't remember all that was done to this motor before you received it.

It already has a +.20 bore, so why do you need to bore it more? If you do end up needing a new motor, just look for a short block. It will save you a ton of money unless you plan on selling off all the other parts from the NEO motor that you don't need.

As for the HKS low-mount manifold and wastegate, it doesn't typically fit around the steering shaft and mount kits unless you have the R33 crossmember and mounts. Even then you're limited to the size of the turbo you can run. I'd get a standard 6boost with T4 divided flange and external wastegate. Then get a twin scroll T4 turbo to suit your driving needs.

Both log style and tubular manifolds have decent performance if they are designed properly. The stock log manifold is actually decent with some port matching and possibly even some extrude honing if you're set on using it. Inexpensive alternative IMO, but then you're limited to T3 turbos.

[Shocker]

Thanks for the advice. See my dilemma is... Ok its already got a .20 over bore with 86.5 mm pistons. I have read that it is unsafe to bore to .40 over and run an 87 mm piston. is this true? this is basically my deciding factor of getting a new block / entire motor. I don't want to have an "unsafe" bore of something too large for the walls in the block. What do you guys say? should i bore to .40 over or look for a new motor.

PS: my engine will never be as nice looking as cjmartz2k's engine! I love those RB25 valve covers

88mm is where ppl have run into problems, the wall thickness between cylinders gets pretty thin. 87.5mm is all I'd go max.

Lets also be realistic here I'm talking about cars 7-8-900+ hp. I wouldn't worry about it.

[l0nestar]

Matt,

As far as the HKS is concerned, it comes in T3 and T4 variants.

[sickness14]

Sorry but can you refresh my memory on why you need to rebuild it again? I can't remember all that was done to this motor before you received it.

It already has a +.20 bore, so why do you need to bore it more? If you do end up needing a new motor, just look for a short block. It will save you a ton of money unless you plan on selling off all the other parts from the NEO motor that you don't need.

As for the HKS low-mount manifold and wastegate, it doesn't typically fit around the steering shaft and mount kits unless you have the R33 crossmember and mounts. Even then you're limited to the size of the turbo you can run. I'd get a standard 6boost with T4 divided flange and external wastegate. Then get a twin scroll T4 turbo to suit your driving needs.

Both log style and tubular manifolds have decent performance if they are designed properly. The stock log manifold is actually decent with some port matching and possibly even some extrude honing if you're set on using it. Inexpensive alternative IMO, but then you're limited to T3 turbos.

I need to rebuild it again because #6 piston melted, bonded to the head, scared up the cylinder walls. have to bore it another .20 over if the honing does not clean it up. I dont want another regular s1 or s2 rb25. Neo > S1&S2. Ive got a lot of money invested in neo parts. (ECU, Cams, Ect.) and dont want to downgrade.

oh and i have the R33 crossmember so the HKS mani should work. and the turbo i have is a T3 flange i believe. (its a t3/t4). I dont want to buy a twin scroll turbo as of right now. maybe GT4281 in future.

88mm is where ppl have run into problems, the wall thickness between cylinders gets pretty thin. 87.5mm is all I'd go max.

Lets also be realistic here I'm talking about cars 7-8-900+ hp. I wouldn't worry about it.

thats good to know. so i should be ok with an 87mm bore. i plan on making upper 400's to 500 with this turbo if it will do it.

[Cjmartz2k]

I'll keep my eyes open for a HKS mani for a good deal. If you want one real bad though, I can have my GF look on yahoo auctions japan and probably find one. Usually not a smoking deal if you get them from there though.

[sickness14]

I'll keep my eyes open for a HKS mani for a good deal. If you want one real bad though, I can have my GF look on yahoo auctions japan and probably find one. Usually not a smoking deal if you get them from there though.

DUDE that would be AWESOME! i thought about asking you but i didnt want to bother you again after all you have helped me with so far. but hey, i wont turn it down. lol. Any manifold will do really, as long as its a name brand one that lines up nicely. Apexi, hks, ect. they are all nice.

tty soon.

Oh and ive got these fenders laying around that i bought a long time ago. i did a test fit last night to see what i thought of them... and i dont really like them to be honest. i think they're a little much. its part of the M-Sport body kit. let me know what you think.

I painted the Rad support in these pics too, and took all the stickers off from under the engine bay. looks a little better. also got the stock fenders lined up better, ever since the wreck from previous owner, its been a little wack. the car was jacked up from under the side of the rocker panel where the fender bolts on and i t was all bent up. i straightened it out a little

The intercooler piping... im re-doing that some time. i didnt like how it went all the way around the side of the fender and came into that opening. im going to cut a hole again in the left side of the bottom part of engine bay to have minimal intercooler piping . It was hanging down too low because of the S pattern. It will also be 3" instead of stepping down a size for the turn bc of tight radius of bend.

also got fan controller mounted and wired in. just have to solder connectors onto fans and plug them in.has anyone ever seen the use of -12 an fittings on the radiator to the water neck on intake mani? i saw a picture of it a while back and thought it was a pretty cool idea, and alternative to silicone hoses that can pop off. just a thought. Cant wait to hear back from machine shop hopefully tomorrow so i can start getting parts together (pistons, HG, Bearings, Gasket kit) for bottom end.



and heres some shots of the Cognition radio delete panel i wont be using a radio at all, ill be using an ipod with a Y cable to my 4ch amp. it really needs a pre-amp between the two but it will work for now. i love the look of the dash with it.

[sickness14]

Ok i got word back from the machine shop. Block will be ok! but needs to be bored out. I will use an 87mm piston now. Does anyone have opinions on which piston to run? I had CP's in there and ive seen a lot of wiseco pistons being used as well. opinions? Ricky @ raw brokerage has the Wisecos on his website, as well as CPs and Mahle's. I need to order these soon so any opinions would be appreciated

[sickness14]

ok, so since i havent heard anything from anyone, im starting to think everyone forgot about me. oh well. I guess ill just figure it all out on my own! I'll be ordering the 87mm CP pistons from JGY tomorrow morning.

[Cjmartz2k]

Sorry, been super busy. Had you considered going top mpunt like my mani? Still no HKS mani. Interior looks bad a** btw.

[sickness14]

thanks. I think im going to have to go with the 6boost manifold. I would like to keep it top mount. which do you have?

[S14-NEO]

id go with the CP's over the weisco's and day...are the CP's that you took out not any good now?...stock bore perhaps?...if they are stock bore what do you want for them?