Belt drives.........
Turbo Mini Forums

Shall I use a belt drive setup guys, I've been offered one but cant decide wether to have it or not.
has anyone ever had one break?
And does it need to be adjustable or can can you adjust it enough by moving the teeth?

any advice muchly aprreciatted

if it's not adjustable then you need to use ofset woodruff keys to adjust, just like a chain.

Team Racing

Some are adjustable...

http://www.minispares.com/Product.aspx?pid=35510

Most are like Jim says... I've got that type.

The benifits are more power and much quiter with less stretch issues... Downside is they are very short so need replacing regulrly!

Alex

AlexF

how more power????

Everyone knows that instructions only have to be read if the thing doesn't work....

How regularly?

From what I have read in the past, people claim more power due to "more consistent cam timing with less variation due to chain tension".

Personally I think you would be very hard pushed to prove this. The only other thing I can think of it less resistance driving the belt than a chain? Again, so little difference I doubt you could measure it.

I personally am using the Kent silent chain type vernier setup, used it on a few engines before now and can't fault it.

You can measure the frictional losses!

Its only a bhp or 3 but its still there... I spent a long time at Ford looking at Friction and studying the causes.

Alex

AlexF

Run a belt for a few years now. I have replaced the belt yearly, but they always look like new when removed anyway.

Phil.

WWW.TURBO-MINI.COM

I could do...

but you lot are only waiting in the wings to shoot down what I say...

I was involved in alot at Ford yes... the department I worked in was basically R&D.

Wasn't involved in lots of things at ford :p

Alex - spitting the dummy!

AlexF

I have found the belt drive kits from Minispares to be very good. It is cheap and easy to change a cam belt even with the engine in situ.

As far as power loss goes i feel with one very large oil seal around the cam pulley causing slight fricton power loss could be more than a normal duplex setup.

With the vernier facility you get get the timing spot on and is relatively easy to change to the desired.

"Alex - spitting the dummy"

That sounds like something Michael Jackson partakes in...

michael jackson`s is in the $hit anyway , cos he swore on the pope`s life he never touched them kids.....

Edited by iain on 12th Apr, 2005.

Everyone knows that instructions only have to be read if the thing doesn't work....

ha ha ha ha ha ha!!!

THREAD HI JACK!!!

Good points Nicky, as far as the noise issue goes it is unnoticable as most of us run tuned cars with big cams and clattery drops anyway.

Adjusting a tooth at a time is far to much, worth getting a vernier set up.

JF.

well a belt is slightley..................... less noisey

supposes if you are building the ultimate engine and
"MONEY" is not an issue !!!

ever little helps

having said that chaps it would also eliminate that hidiouse OIL leak every one comes across from the btm of the chain cover,

SOME TIMES!

iam sure ever ones had an engine with one ?? LOL



i have wrestles with some units over the years

thinking i have fitted the gasket right, only to be gutted when it started to weep after a few months use....................

Agree with that Ben! It's the one part I use plenty of gasket goop - but it still leaked!

Next time you do one - out of interests sake - fit the cover, then go and measure the distance from the crank (where the pulley is located) to the outside of the area where the oil seal sits.

I eventually figured out on mine why the oil seals used to wear out and weep like mad after a very short time last time i rebuilt my engine!
Yep, the oil-seal location was offset from the crank centreline by 1.6mm!
Wriggling the cover got it to just under 1mm, but a few of the holes had to be filed out before it was pretty much concentric. Admittedly, only did around 13/1400 miles last year, but ther was no leaks from here for the first time since ever.

Two things are infinite: the universe and human stupidity; and I'm not sure about the the universe.

Karl...

Would you believe it thats exactly what "the rig shop" does in Ford's Dunton Research & Development Centre in Essex....?

Alex

AlexF

:cool:

Edited by minimark on 13th Apr, 2005.

Everyone knows that instructions only have to be read if the thing doesn't work....

another - Why do some women have massive norks, and others like a penny on a paving slab?

Despite extensive research in assorted 'periodicals' and visual aids such as a television or computer monitor, i'm still no closer to understanding it. I will continue my quest however.

Edited by turbodave16v on 13th Apr, 2005.

LMAO...

Women = You never will
EFI A-Series = Direct Injection
Americans = Don't bother
Jimster = Who? :)

Two things are infinite: the universe and human stupidity; and I'm not sure about the the universe.