[ordy]

Hi Flash



When you say Pete carries the pressure plate as well, i suppose you mean he carrier a original item which is needed?



If thats the case i may as well purchase the flywheel, the friction plate and the pressure plate from him, then i know it will all work.



Cheers



Ordy

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[flash]

yes, that's exactly what i meant

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[ordy]

Cheers flash

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[mrmister]

Hmm. I wonder if my shop balanced everything. For some reason I am guessing they didn't.

If I make it to Paso, would a trained ear/eye/touch be able to tell if it was unbalanced, or would I have to open the damn thing up and send it out to a machine shop?

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[flash]

it's possible that i or anyone that knew what to look for could feel it, depending on how out of balance it is - no way to see it though

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[S_Cal968]

<!--quoteo-->QUOTE <!--quotec-->do not install a single mass flywheel without balancing<!--QuoteEnd--><!--QuoteEEnd-->
When I read this I got the impression the RSB F/W doesn't come balanced[?]. I would hope that the RSB flywheel has some level of balancing after machining[?].

Also I'd bet the Porsche pressure plate assembly is balancing during manufacturing. When I worked in a shop, if we found an aftermarket F/W without balancing. we'd return it. I can't imagine a reputable company selling a product designed to spin over 7krpm and not balance it.

And just to clarify - for those that are wondering - the balancing mention in this thread is mating the 2 components and performing *additional* balancing, [read more for fine tuning]. The parts should work out of the box, however the assembly balance could potentially be out 120 degs.

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[flash]

the rsb flywheel is not balanced - it is close, generally within 4 grams, but not balanced

no flywheel company i have ever purchased from balanced the flywheels - every one of them needed balancing - the companies were all reputable - certainly they could balance them, but since you would then still need to take it to a balancer and have the pressure plate balanced to match, and there is no extra charge to do both a flywheel and a pressure plate versus a pressure plate alone, it seems silly to even try, and bad marketing to inflate an item's price with a superfluous operation

the factory flywheel is not balanced - further, according to the guy who just did mine, it may not even be able to be balanced, due to the nature of the dampening mechanism - he was interested in finding out though - he spun a bad questionable one i had here, and it was all over the place

the factory pressure plate is not balanced, or at least none of the ones i have seen so far - do drill marks - no welded weights - nada

replacement pressure plates are obviously not balanced either, since they need to be balanced bolted to the flywheel, and there is no way to balance it prior to that, as there is no way to connect it to the machine

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[Big Dave]

This might be a "school boy" question. BUT how on earth does one balance a flywheel + clutch assembly.???

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[PorscheDude]

Similar to balancing the crankshaft.

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[Johannvb]

Now I am confused... I thought the pressure plate and flywheel is bolted together with the correct bolts etc and then the whole setup is balanced. Or is the picture only for balancing a flywheel on it's own....which Flash said no one does [img]style_emoticons/<#EMO_DIR#>/huh.gif[/img]

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[flash]

it is - first you do the flywheel by itself - then you bolt the pressure plate to it and do the assembly

what i said was that none of the manufacturers i have ever dealt with do it as a part of their production - they still get done, but you have to take it to a balancer yourself (or have the shop doing the installation do it)

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[S_Cal968]

Since most flywheels are manufactured using high precision cnc machining you may not see any indication of balancing. As mentioned, I'm not saying balancing should skipped, but if someone by-passed this step, they don't need to panic.

Just as a sanity check I visited a couple of F/W manufacturer sites and they are balanced or at least checked. They have to perform some level of quality control to assure the F/W's are within spec. And, I wouldn't be surprized if they also inspect them for voids.

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[flash]

agreed that 4 grams is not the end of the world, and may not be felt - still, it is worth getting rid of

the problem is the pressure plate - those things are often 10-12 grams out - that can make a mess, especially if it is added to the 4 grams of the flywheel

you've got it apart - spend the 75 bucks and be comforted that you did it right

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[mattipuh]

<!--quoteo(post=70163:date=Apr 10 2009, 06:39 AM:name=flash)-->QUOTE (flash @ Apr 10 2009, 06:39 AM) <{POST_SNAPBACK}><!--quotec-->agreed that 4 grams is not the end of the world, and may not be felt - still, it is worth getting rid of

the problem is the pressure plate - those things are often 10-12 grams out - that can make a mess, especially if it is added to the 4 grams of the flywheel

you've got it apart - spend the 75 bucks and be comforted that you did it right<!--QuoteEnd--><!--QuoteEEnd-->

True, everything balanced would be a nice thing.
I got a little bit of angry with this thing, mostly with my own unconsciousness, because didn't realize I should balance this thing before assembly.
The mechanic who did the assembly did it first wrong, which ment I had to get it assembled twice (x2 assy costs), and after this I understood that these things should be balanced too.. but didn't have effort anymore to rip it out third time ... too much sunken costs already. [img]style_emoticons/<#EMO_DIR#>/mad.gif[/img]

Well, could do it next time when car is ripped of for bigger engine rebuild, then there's time to take other parts out too. My car is a daily driver, so it's abit more difficult to part car out totally and leave it standing for weeks. Maybe I should buy an old Turbo Audi for daily driver... [img]style_emoticons/<#EMO_DIR#>/tongue.gif[/img]

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[flash]

lol - join the club - we're getting jackets made next week

i've had my clutch out 5 times in the past 2 years, trying to work out prototypes of new disks - so many that i stripped the holes in the flywheel and had to helicoil them, didn't like that, and had to buy a new flywheel - keep in mind that mine is a LOT harder to do than standard, since i have the upper and lower braces, as well as all 3 pans and the header, all of which have to come down, as well as the entire exhaust, in order to do the job - that means new exhaust rings and bolts every time

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[PhilG968]

I'm waiting for my RS Barn Flywheel, Kevlar Disk, and Pressure Plate to arrive.
180,000 miles on the original, she's starting to tell me to retire her.
Installation will be Aug 12, is there anything I should know about break in of the
Kevlar Disk or is it business as usual.

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[PhilG968]

Its in, I love the way it drives.
Very smooth, not hard to get started at all.
I don;t feel any loss in torque like I've heard from others.
Shifting is quicker and smoother, and the engine takes off when you hit the throttle.
Great for down shifts.
The buzz is real, and i will adjust for it. Its only slightly worse
than when I put a spring centered disk into my 85 944.
Proudly wearing my RS Barn T-Shirt.
Thanks again to Pete.

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[flash]

you just have to love it when stuff works

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[Cloud9...68]

PhilG- Just to clarify, you did get the spring-centered clutch disk, right? Thanks.

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[PorscheDude]

I had an opportunity to drive Marks cab last year at a meet outside DC, with the RS Barn set up, and really loved it.


Thanks again Mark.

I wear my RSB shirt all the time!
Thanks Pete!!!

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