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Engine Response

owned

By owned,
in General Automotive Discussion

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owned Mentor

owned

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Posted

Hey all,

Just curious on a little issue. I'm looking to get more response out of my rb25, i've been playing around with the idea of putting in a light weight flywheel. I've heard that you can get some pretty good results from it but i'm still in need of a bit of convincing. Someone with experience with this drive train modification please enlighten this :newbie:

Thanks

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ferni Grand Master

ferni

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I don't have any expereince with it, but i'm planning to put a light weight flywheel in when i do my clutch next, it should give it that little bit more response/rev a little quicker...

anything you can do to lighten up the drivetrain has got to be good for responsivness

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pstanbis Enthusiast

pstanbis

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a lightened flywheel will help improve pick up response, but be aware that it will also cause the revs to drop more during gear changes...

Dave has a good point here - if it'll rev faster, it'll DE-rev faster too... i guess it depends on how you want to drive it. IMHO, i would have thought that for dragging, maintaining revs would have been more important than quick throottle response ? don't quote me on that though...

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Steve Grand Master

Steve

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Lightened flywheel, lightened wheels, lightened tail shaft, lightened pulleys are all good.

But you can also lighten your car - rip up the carpet and remove all the sound deadening, remove the boot trim and the spare wheel, remove the rear seats.

Not only will you increase responsiveness, as the car gets lighter, it brakes and corners better too. If you can remove 70-80kg - that have as much difference as between when you have a passenger in the car and when you drive alone - every bit helps.

If you have management, get it tuned with AF ratios around 11:1 and add more timing - this too will increase responsiveness. Its how one of Signal's D1 drivers suggested I should tune my car to increase responsiveness. He also suggested that running a base fuel pressure of 3kg (instead of stock 2.5) would help, with the right tune, to increase response further.

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owned Mentor

owned

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mmm thanks all.. has given me a little food for thought.... more comments please:D

yeh the flywheel and a light alloy pully system should be good... what i want to do with the car is just make it a little more responsive....... not jack the boost up and make it go nuts.... just enhance whats already there. Sorta like trying to play with the car in a little different manner. :)

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