Ways To Improve Response

[EM1]

One question ,If you got the tomei dumps and manifolds ceramic coated inside and outside would that help protect them.

[wedge_r34gtr]

One question ,If you got the tomei dumps and manifolds ceramic coated inside and outside would that help protect them.

In theory it should

Rapid changes in temp contribute to manifold crack. The ceramic coating should greatly reduce heat transfer and allow for slower heating/cooling cycles reducing thermal shock.

[R31Nismoid]

In theory it should

Rapid changes in temp contribute to manifold crack.

Indeed.

Along with weight of exhausts poorly hung and movement of exhausts as well when used on circuit, another big factor.

Typical street driven cars don't seem to crack them. It's the guys doing circuit or 400rwkw+ and solid driving that seem to kill them. Your 350rwkw street car would probably be fine... But then... Stock manifolds are fine for that so why bother really?

Go with stockers, reliable and cheap! (Breaking a Tomei set makes people cry as you gotta take the turbo side out to fix/replace).

[Piggaz]

^^^

1500 kms and I blew a hole in #1 runner which was half the size of a smaller fingers finger nail. ONLY street kms.

[levinboy]

-9s 350kw on 98 built 2.6 full boost 22psi by 3800rpm earlier depending on weather

Don't you remember the ride I took you on...

[vorse]

-9s 350kw on 98 built 2.6 full boost 22psi by 3800rpm earlier depending on weather

Don't you remember the ride I took you on...

i do and it was awesome still brings a stupid grin to my face i just think its going to be way to hard for me to get everything perfect to get it setup like yours to make the power i want i dont want to get to the end of my build and be dissapointed

[R31Nismoid]

i do and it was awesome still brings a stupid grin to my face i just think its going to be way to hard for me to get everything perfect to get it setup like yours to make the power i want i dont want to get to the end of my build and be dissapointed

As i keep saying - you've got a LOT more to put into the driveline/suspension yet. Nick has a well sorted set-up and that's what makes it fast in the roundy roundy stuff, not just the power (which is still good) of course).

My R33 R was SOOooooo much more fun to drive, and faster, with the suspension/brakes/diffs/transfer case all done. So much so that if I was doing another build I'd do all that first before going for power. I drove a mates R33 R without decent suspension/diff/transfer case and it was nowhere near as fast as mine. Both cars had similar engine builds/brakes/power

[vorse]

As i keep saying - you've got a LOT more to put into the driveline/suspension yet. Nick has a well sorted set-up and that's what makes it fast in the roundy roundy stuff, not just the power (which is still good) of course).

My R33 R was SOOooooo much more fun to drive, and faster, with the suspension/brakes/diffs/transfer case all done. So much so that if I was doing another build I'd do all that first before going for power. I drove a mates R33 R without decent suspension/diff/transfer case and it was nowhere near as fast as mine. Both cars had similar engine builds/brakes/power

im worried about getting the ceramics off the engine bay as a first priority then im sorting the suspension

[R31Nismoid]

Yeah that is always a good idea (I more meant building motors and what not, should've been clearer )

[vorse]

Yeah that is always a good idea (I more meant building motors and what not, should've been clearer )

haha im trying to plan forward so what i buy now will be applicable when i start to build over engineer so stuff dosnt break

[Roy]

IMHO response and all thar fluff costs thousands and adds a few kws to the party. Just get a good spread of power and spend the thousands you have just saved on actually punting the car at the occassional track days

This got it right on page 1

Prime example here in Vic is everyone said you needed 380rwkw to get a GTR into the 'teens' at Sandown. Then one day it was done solidly with 330rwkw and full weight. It came down to the things mentioned earlier - and a driver with experience and knowledge of his car

Put -9s on (so its still responsive around town), and spend time/money in getting the car sorted in the more important areas - especially seat time, as you'll chop times consistently for years In most cases especially as you develop the car. Enjoy milling over that for the next month lol

Only his reasoning for improved times is wrong It had more to do with the tech of tyres and change from RE55s to AO50s. The change from 98-100ROn to E85...those two factors alone mean there is no point comparing times...not to mention the final factor that tracks are being re-surfaces. Sandown is faster simply because of re-surfacing and now PI is >1.5seconds quicker due to re-surfacing.

But to the core of the question. The things that increase response. Well everything is a compromise and trade off. But the main things are to reduce inertia so smaller lighter materials for things like turbo wheels, tailshaft, accessories on the front of the engine. Reponse comes from good culinder filling and gas velocity so as others have touched on dont go crazy big bore on inelt pipes and headwork.

If you want Mines like response just put 2 stroke/rotary like gearing in your car and the need to swap gears every 2 seconds will have you thinking you are driving the most responsive car in the world But silly statement but raises the intersting point is to look at gearing and diff chanegs are an option.

If you are talking engines then bin the head. Get an RB25 R33 or R34 head, put an built for purpose inlet manifold on the car and just jam fist fulls of boost into it

[R31Nismoid]

Only his reasoning for improved times is wrong It had more to do with the tech of tyres and change from RE55s to AO50s. The change from 98-100ROn to E85...those two factors alone mean there is no point comparing times...not to mention the final factor that tracks are being re-surfaces. Sandown is faster simply because of re-surfacing and now PI is >1.5seconds quicker due to re-surfacing.

There is every point. It's the whole point about car development over time and making improvements in various areas. If tyre changes simply meant no point, then why bother even comparing anything? Tyres are always going to evolve just like car set-ups.

Go back 5-6 years then with AO50s and resurfacing - those times still wouldn't have been done as there is still improvements being made, such is the nature of developing a car.

[vorse]

think im going to be stickinging with -9s till i do a rebuild and stroke the motor one day time much time to think about this stuff in this crappy job

[fatz]

+ for spending teh 10k on turning up to the track and thrashing it

it still make me laugh when people roll up with 350rwk and do a lap time. turn the boost down to 12 psi and go 4 seconds quicker

[Roy]

There is every point. It's the whole point about car development over time and making improvements in various areas. If tyre changes simply meant no point, then why bother even comparing anything? Tyres are always going to evolve just like car set-ups.

Go back 5-6 years then with AO50s and resurfacing - those times still wouldn't have been done as there is still improvements being made, such is the nature of developing a car.

Yeh, its always a matter of factors. But the 3 biggest factors are tyres, track and E85...so car development is a far smaller variable. Take them off E85 and put them back on RE55s if you want a good indication of just how much the cars have really developed

[GTR_JOEY]

Borg warner 83/75 422rwkw 22psi at 4000rpm on E85...2.6L and stock compression

surely could be improved with stroker and higher compression

[vorse]

come on guys there must be other ways to get more out of the bottom end im curious and want to learn

[levinboy]

High comp ratio and E85 sounds like a winner, depending if its easily available

But go out and enjoy the car, get it on a track. Most importantly make the bloody thing reliable!!!!

[wedge_r34gtr]

come on guys there must be other ways to get more out of the bottom end im curious and want to learn

How's your bank account look?...VCAM is another option...

or rather than chasing the power at low rpm, what about lightening the rotational load (carbon shafts, carbon clutch etc) to help response

[R31Nismoid]

carbon shafts, again comes back to how does his bank account look

Either way most of the affordable things are already covered, everything else just gets more and more expensive as you go