Menu toggle

Engine Wine

gajh

gajh

New member
Hi All,

Well my prosche is back head replaced and I was raring to go except, but there is a terrible wineing noise that is really load and gets more high pitched when increase in revs actually it is really unberabile. I have disconnected the alternator belt and the power steering belt and it is still there. Also since getting it back the idling is going up and down like a yo yo.

Prior to the head being changed the cam belt and water pump where replaced and I never had the problem except the power issue, which is now better after the head swap.

Any ideas on how or where to start looking

Thanks

Gavin
 
it was the guys and bubble and kick racing, they did my suspension at the same time. Interesting you say that I have just found something on you tube that points to that. Do you still have parts available
 
i am looking for the cover that is under the bonnet at the bottom of the windscreen, if i look by my windscreen and can see the wires etc.. hope that makes sense not sure what it is called
 
I'd be very surprised if it turned out to be anything but the balance belt, very surprised as the guys at B&K racing are 944 racers so should know, but could be that they've got the idler to close to the belt as well.

You really should get it sorted asap or it'll burn out the bearings on the roller as its not designed to run at constant engine speed
 
Hi Paul,

I am not going to run the car, they are going to sort it out for me, hopefully by coming to my home to repair it. They had it rolling road tested and it is still pushing out 186bhp which is great for a 23 year old engine, just want to get it finished and start using it so i can get rid of my alfa.

Gavin
 
Sorry could'nt help myself.


Perhaps it doesnt need fixing as its pretty unique with the engine producing wine.................
 
LOL, I was think about downing a bottle of "wine" to drown my sorrows, so yes should have been whine[:D]
 
silly question can the belts be adjusted by a home mechanic with out the special tools for checking the belt tension. From what i have read it is removing the covers and making the adjustments using tools and a feeler gauge to check the BB idler clearance or have I really simplified it
 
silly question can the belts be adjusted by a home mechanic with out the special tools for checking the belt tension.
Click to expand...

An often asked question. As you can borrow the tools for nothing more than postage costs why would you ever risk getting it wrong? [8|]
 
I used the simple "twist through 90 degs" method for the cambelt-can anyone confirm that the balance belt should be 45 degs-incidentally,who do you contact to borrow the tension setter? Another cause of whine can be the fact that current replacement balance belts are the same width as the cambelt,ie the same as the pulley,whereas originally the balance belts were narrower & so fitting the newer belt means that air can be trapped in the worn part of the pulley as the belt runs on the unworn part until it beds in.
 
If you call the club office they'll put you through to the right person, Paul Grainger IIRC.
 
45 degrees for the balance belt is far too tight, you can just about get them to twist by about 360 degrees if you try, they run very loose. The earier cars used the thinner balance belts from what I remember, after 87 they went onto the thicker belt. The balance belts never whine if you tension them correctly. Nothing should whine in a 944 engine. They are quite a quiet engine when set up properly, I have heard a fair few sounding like a supercharged London taxi!
Alasdair

 
Now I knwo that you should always use the correct tools etc, but.... (and Eldavo will confirm this) I changed the belts on mine around the same time that Dave did, and when we checked them both with the tool when he had it for his car they were within the correct limits and that was doing them by feel.

Saying that my mate and I have been doing this kind of thing for a long time now! As Alasdair says the balance belt on these engines feels like its running very loose but thats how it should be, check the idler is set at the right distance from the loewr pulley.
 
Ok I think I am going to take the belt covers of this weekend just to check, would it be worth replacing the BB tensioner and idler pulley as a precaution as some mentioned they can get damaged if the belt has been over tightened.
 
The tensioner pulley will be fine but I'd loosen off the belt and check the idler pulley spins freely. If it does, just leave it.
 
thanks will do, and the balance shaft belt idler roller should run free even when the belt is tensioned, just making sure
 
You must log in or register to reply here.

Posts made and opinions expressed are those of the individual forum members

Use of the Forum is subject to the Terms and Conditions

Disclaimer

The opinions expressed on this site are not necessarily those of the Club, who shall have no liability in respect of them or the accuracy of the content. The Club assumes no responsibility for any effects arising from errors or omissions.

Porsche Club Great Britain gives no warranties, guarantees or assurances and makes no representations or recommendations regarding any goods or services advertised on this site. It is the responsibility of visitors to satisfy themselves that goods and/or services supplied by any advertiser are bona fide and in no instance can the Porsche Club Great Britain be held responsible.

When responding to advertisements please ensure that you satisfy yourself of any applicable call charges on numbers not prefixed by usual "landline" STD Codes. Information can be obtained from the operator or the white pages. Before giving out ANY information regarding cars, or any other items for sale, please satisfy yourself that any potential purchaser is bona fide.

Directors of the Board of Porsche Club GB, Club Office Staff, Register Secretaries and Regional Organisers are often requested by Club members to provide information on matters connected with their cars and other matters referred to in the Club Rules. Such information, advice and assistance provided by such persons is given in good faith and is based on the personal experience and knowledge of the individual concerned.

Neither Porsche Club GB, nor any of the aforementioned, shall be under any liability in respect of any such information, advice or assistance given to members. Members are advised to consult qualified specialists for information, advice and assistance on matters connected with their cars at all times.

Porsche
Lockton
Pirelli
Officially approved
Oracle Finance
WEX Esso
Collecting Cars
Back
Top