Suggestions,help Etc. Scing My V35

[Haino]

Hey all, I just threw out a couple emails around the place to get a few quotes on superchaging my V35,

Just wondering if any of you have SC'd your V35 or have any recommendations of a good garage from personal experience,

annnnd what Id be looking at for a general quote so I dont get ripped off, Im already guessing around $5500 for the SC but what shud I expect for install/labour + tune etc, maybe around $8000-$9000?

I dunno help me out here,

Cheers guys,

Brenton

[Nightcrawler]

The big issues with supercharging is, that to do it properly, you really need to decompress your motor somewhat, which really means engine out full rebuild. So once you add $5k in rebuild/major service parts, plus removing/reinstalling the engine ($1,000-$2,000), plus labour for rebuild (1,000-$2,000), THEN add on top labour to fit and tune the SC ($3,000-$5,000), it is a pretty expensive exercise, to say the least.

But with 300rwkw it would be all worth it

[PN-Mad]

Going to have to disagree with night crawler.

It's not the compression of the motor in itself that is the problem. You have to get the car tuned, therefore all of the timing figures are going to change to be safe for the pressure your running so det isnt an issue.The problem with the stock motor are the connecting rods are weak. However they should not be near their limit with the std pulley on the Hks kit. If you are shooting for big numbers then you will have to rebuild and lower the compression as nightcrawler said. Neither will you get 300kw with a sc kit. Expect off the stock kit 210 to 230kw at the rears depending on how happy the dyno is.

I would be suprised if a shop could do it for 8k. I don't see how when you think about the cost they are going to charge you for engine management as well. Plus you will need supporting mods as well like a shift kit and cooler if auto, brakes if no brembos, and suspension. Myself and a mate have installed a Hks sc on a 350z. You might have already contacted him.

[T4NK]

Yeh, buy an R34 by the time u spend the cash on the V35 to SC it to get to the 300RWKW mark u can almost buy a R34 GTR

[sonicii]

Depends on how much boost you want to run, low boost with 98 RON fuel and you should be ok. (assuming stock injectors can keep up.)

If you want to start running higher boost, then you need reduce your engine compression ratio.. doesn't matter what you do with the timing, if cylinder pressures get too high for the fuel you run, you will get detonation, which will quickly destroy your engine.

[PN-Mad]

I wouldn't recommend stock injectors. They are small, like 310s or 330s or something. On my car they would be 100% duty if i still had them in. You really can only run low boost on the stock block. Put it this way, at 6psi, I have gained bout 70kw at the wheels.

Run 600s or 1000s if you want e85, bigger pump. You need a bigger afm if you go above about 4psi if not going to maf less.

[sonicii]

I would suggest you only go as big as you actually need with injectors. If you only need 500cc.. then just get 500cc. The only positive with running anything larger is they will cope with more demand down the track, everything else is a negative, poor economy, poor idle, etc.. under light engine load (which is going to be the majority of the operating conditions), it will be a bit like the ECU trying to measure out exactly 5.25ml of fuel using only a 10L bucket..

[PN-Mad]

There is something called headroom that you need when choosing injectors. You don't want to run them at 95% because when you ask a little more of them ie cooler conditions, or a boost malfunction, they will lean and damage your motor.

Those symptoms might be true with eBay shit high flow injectors, where some one has drilled holes in the bottom. But if your talking about good quality injectors, it's not a problem. My idle is perfect, even with bigger afm and 600s. Really it's not pushing any limits. And you need a good tuner to get the basics spot on to get it perfect.

So therefore proven recipe 600 on pulp, 1000 on e85

[T4NK]

When i was looking at doing a SC kit i was going to buy the full kit from HKS, it comes with, ECU plugin, injectors and i think fuel pump its a full bolt on kit dont need to buy anything else for it, but as they guys are saying if u want more then 6 pound boost u need to forge internals and thats about 5k worth including parts and labour in that.

[PN-Mad]

Buying that whole kit is one of the biggest mistakes you could make. Your injectors are just a 7th injector. You have a Hks computer which only 2 or3 people in sydney can tune, and it's hideously expensive to tune. Better off saving the 1g and doing it properly.

Plus by the pics it just looks like a piggyback Fcon iS.

There is a used v35 kit on yahoo Jpn at the moment.

[T4NK]

Yeh i decided not to do any of it and save the cash for a 34GTR

[Haino]

So 1. its ridiculously difficult to just go out and go "hey I want this SC on this car, GO"

and 2. you guys rekon its just better keepin it relatively stock(as in) and grabin a 34GTR ye?

Sounds good T4NK did u seel ur V35 and grab 34GTR or just have both? If I do that option Id have both, Insurance go through the roof though

Edited May 23, 2012 by Haino

[sonicii]

Depends on what you are after. if you want a high performance AWD car, with scope for some good power gains without needing to do major internal engine work (unless you want to go silly), then the GT-R is the better option by far. there are heaps of aftermarket options out there, plenty of people who have been down the track of modifying a GT-R and able to offer advice, and you shouldn't have too much trouble finding someone who knows how to tune it for you.

On the other hand, if you want to keep your comfortable daily cruiser, but just want a bit more 'stick', then go the FI route on your V35, just be aware, even mild boots is going to cost you a premium to do it properly.

[PN-Mad]

^^^^ what he said.

On your number one point, no its not hard. Just expect to reach deep into your pockets. If you can do work yourself, and do some research into it, Rather than just taking whatever is in a kit, then it works out much cheaper.

Remember, gtrs have their failings too. You might go get one, and spin a bearing in your first week. Hello 8k basic rebuild.

Cost for cost, once and engine rebuild is taken into account the V will not disgrace itself against a gtr in a straight line. It doesn't have the benefit of awd, but it is also more comfortable and easier to drive IMO. And you'll never end up with oil in the rockers in a vq!

[Haino]

Thanks for the help guys, Im liking the idea of keepin the V as in and just pickin up an R32/33/34 and makin a hobbie of doin it up. Just with a reliable VQ next to it (Y),

but cheers guys helped a lot