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Mild Gtr Upgrade

R34

By R34,
in Engines & Forced Induction

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MrStabby Grand Master

MrStabby

Posted
Posted

if a twin plate clutch drives nicely I'd be all for it so I'll have a look at those.

Well i'll agree with UWISSH that Nismo twins are well known for being pretty much as easy as stock clutches - but they're not cheap (around $2K?), and being a twin, they'll probably rattle. My point is, if you dont need to support big horsepower or brutal use, you could go with something cheaper.

N1GTR Grand Master

N1GTR

Posted
Posted

NISMO twin plate. Forget singles.

I had a NISMO single, that was ok but the twin was MILES in front. Plus you can launch it so hard. On the shift change it's so positive yet not at all heavy like a twin

That was 262rwkw with both clutches.

Also, no rattle.

Brandon Veteran

Brandon

Posted
Posted

NISMO twin plate. Forget singles.

I had a NISMO single, that was ok but the twin was MILES in front. Plus you can launch it so hard. On the shift change it's so positive yet not at all heavy like a twin

That was 262rwkw with both clutches.

Also, no rattle.

Thats my end of year wish!

  • 2 weeks later...
R34 Mentor

R34

Posted
  • Author
Posted

I bought some R34 BB turbos thinking that's all I wanted but now been offered a set of new -5's for a great price.

Unsure if all the effort and cost of fitting the R34 turbos will be worth it.

Should I just go the -5's and only up the boost until the limit of the AFM's/Injectors and see how that goes?

Would that be a nice driveable package if I decided not to go any further?

djr81 Grand Master

djr81

Posted
Posted

I have a Series III R33 GTR with just an exhaust and PFC with boost controller fitted.

What would be a good next step to increase power and more importantly response?

Car currently has 292 rwhp

I smashed my clutch foot years ago in a MC accident so I really don't want to have to put in a heavy clutch and spoil the experience.

It's been suggested to upgrade the turbos to R34 ball bearing units and maybe Tomei pon b cams.

I was considering -5 turbos but that would mean injectors and new AFMs as well and may end up needing the dreaded heavy clutch.

This car will do the odd motorsport event but manly be babied on the street where I really enjoy the driveability

Any advice welcome

Advice:

Don't bother with cams, have a think about cam gears however.

A smaller version of the 2860 turbo would suit - either a -7 or a -9. Personally I prefer the -9's but each to their own.

A twin plate clutch with a lightened flywheel is a good idea.

Also check the Nismo AFM's as they will work at higher air flows than stock without the mucking about that the Z32's entail.

Harey Veteran

Harey

Posted
Posted

I bought some R34 BB turbos thinking that's all I wanted but now been offered a set of new -5's for a great price.

Unsure if all the effort and cost of fitting the R34 turbos will be worth it.

Should I just go the -5's and only up the boost until the limit of the AFM's/Injectors and see how that goes?

Would that be a nice driveable package if I decided not to go any further?

If you decided not to go any further it would be a poor package imo. You bolt on large turbos -5 turbos and then limit them to 280rwkw, so you get more lag and the same top end so no advantage.

I would only get the -5s if you plan to change the AFM and injectors one day. Until then it will be far less than perfect.

-9s are what your after, they would be good with the stock AFM and injectors but will also reap big rewards if you do change them.

If you dont have plans to change the AFM and injectors, and dont care about the reliability of ceramic wheels (from the fact you want to buy R34 BB turbos) then just get some cam gears, catback exhaust and a tune. You should get ~250rwkw out of that and leave it.

R34 Mentor

R34

Posted
  • Author
Posted

I can get the -5's for $2000 the pair.

Not sure if I would go any further but you never know what will happen if the power bug bites (again)

Currently I have dump pipes back exhaust and PFC tuned to 13psi.

I'm getting 296hp to the wheels and the tuner said with the R34 BB Ceramic turbos and the new dump pipes I'd get only say 330hp which doesn't seem worth the effort now.

Just confused myself :blush:

Country Cruzin Collaborator

Country Cruzin

Posted
Posted (edited)

BAHAHA to going to the drags an NOT doin an 8000rpm clutch drop, done proabably bout a dozen of them at willow bank an neva had clutch problems with 275 tyres, i've neva changed the clutch myself but got a felling it may havebeen changed before it was imported.

Edited by Country Cruzin

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