Acceration

[Guest Takumi]

yep. im a booboo, im an outcast here,

 

if you havnt got a membership card, then you might aswell by building a westfield.

 

 

tak.

[Guest morty]

Why do you expect any gain from a resource that you won't put anything into?

 

Morty

[Guest Ant]

Hmmm. My choice would be no subs = no posting full stop ... perhaps as well for diplomacy that I don't make the rules.

[Mat-Moo]

Okay guys :0 calm down. Takumi please respect that this Board is for the benefit of the RHOCaR club and it's members, non club members are getting free use of this by my choice which I would like to keep.

 

PLEASE KEEP THIS THREAD ON TOPIC OR I'LL CLOSE IT

[Guest 2BBoulton]

On the topic of acceleration the biggest advantage will be to reduce the weight of the fly wheel. Tuning guru David Vizard has written a few books on the subject and I would recomend them to anyone tuning their engine.

 

Loosing wheight from the fly wheel is about the same as loosing 10% (depends on gearing ratios and the like) of the weight of the car only much easier. There are some technical calculations that can be performed to work out the exact details and I don't want to infringe copy right by quote the man himself.

 

It would be interesting to hear from anyone who has done this.

 

Hope it helps.

 

Bruce

[Guest bloke]

2bb from your experience is it expensive to lighten the fly?

[Mat-Moo]

DAMN it really effects it this much? I had my last one lightened but I'm amazed that it could effect the car that much!

[Longboarder]

Helps the engine spin up more rapidly, thus greatest effect in first and second gears but doesn't improve acceleration in fourth or the top speed. Safest to buy a light steel flywheel. If a cast one grenades you get mashed feet.

 

Nigel

[Guest Stuart Ainslie]

Lightening the flywheel can make the car a bit harder to drive in traffic due to less inertia - a bit hit and miss when on and off of the clutch.

Does help the engine rev quicker though...

 

 

S.

[Guest 2BBoulton]

Bloke

 

Never had it done but it will depend on the flywheel. It is best to have it milled although it can be done on a lathe but strapping will need to be added. A machine shop will be able to do the work easily and should not cost much. Good luck.

 

Bruce

[Guest Phil Slater]

Des Hammills book How to power tune Ford SOHC........Engines ( ISBN1-903706-78-5) has a section on lightening and balancing flywheels - amongst many other things. In my opinion, as someone new to the tuning game, it's an excellent book (and no I'm not on commission) that sets out the pros and cons of various processes depending on the level of tune you are aiming for. My understanding is that it's not just about lightening, it's about knowing where you take the excess metal off so as not to weaken the flywheel. In his book there is a diagram of just where to machine the flywheel. I have scanned the diagram but it's to big to post and I cant' seem to find the little program Mat supplied to compress images!!!! Can anyone help?

 

Anyway, the machine shop who checked and skimmed my cylider head weren't at all interested in lightening the flywheel for me so I spoke to my local tuning specialist who recommended another engineer who had a good reputation for tuning and balancing pinto's. He did the business and along with checking and polishing the crank he balanced the flywheel and clutch on the crank for £65.

 

My suggestion would be to make enquiries locally and see if you can find someome who knows what they are doing.

 

I should point out I havent started my engine yet - but the time is getting closer!!

 

Phil Slater

[Les Welsher]

Phil,

the link to the program to compress images is pinned in chit chat.

 

Les

[Guest Phil Slater]

Thanks Les

 

Here is the scan. I'm not sure how usable it will be after resizing but here goes.

If it's not good enough if anyone wants a copy I could email it to if you email me first.

 

 

Phil Slater

[Guest timswait]

My choice for sub 5 sec power would be a cossie. The block is the same as a pinto so it can be fitted easily (relatively), and normally aspirated it's good for nearly 200 bhp, turboed 250bhp or more. That would have to crack 5 secs, wouldn't it?

[Guest AWhite]

Actually it's more difficult than you think. See Daves Andrews site.