Where do I go from here (IMS)

[flaps10]

I find it odd to suggest driving a car into the ground over a set of $15 chain pads. I realize that to pay someone else to do the job will cost a ton of money, but it argues more towards a DIY task.

JFP pointed out early that if the pads were replaced and the deviations brought into line that it may well be a candidate for a permanent bearing replacement. If anything that should sound encouraging.

I think these cars have a long way to go down the path of Porsche hatred (along with the 914, 924, etc) before someone "discovers" what a ton of fun they are.

[JFP in PA]

Originally Posted by flaps10

I find it odd to suggest driving a car into the ground over a set of $15 chain pads. I realize that to pay someone else to do the job will cost a ton of money, but it argues more towards a DIY task.

Only problem with doing this DIY is that you need some special tooling (what else is new) and an understanding of how to reset the cams (ditto). Other than the tooling, it is not difficult, but it is time consuming and attention to detail is a necessity. Several people have done it and it has been written up on multiple websites, along with some real creative "homemade" alternatives to the factory tooling.

[Roger1965]

Originally Posted by flaps10

I find it odd to suggest driving a car into the ground over a set of $15 chain pads. I realize that to pay someone else to do the job will cost a ton of money, but it argues more towards a DIY task.

JFP pointed out early that if the pads were replaced and the deviations brought into line that it may well be a candidate for a permanent bearing replacement. If anything that should sound encouraging.

I think these cars have a long way to go down the path of Porsche hatred (along with the 914, 924, etc) before someone "discovers" what a ton of fun they are.

DIY is not an option for me. I don't have the time, tools, space or know- how to do that job.

[Smallblock454]

Hello,

thanks, JFP in PA and 911monty!

Edit: checked parts numbers. Only piston changed. But it makes sense also to change the spring.

Well, if you don't have access to special tools or you're not able to fabricate the needed tools yourself and have somebody to do the job, than i think you run into cost problems, because even independent Porsche workshops ask in general for a lot of money, just because it's a Porsche. And so it is quite expensive to maintain these cars if you need a workshop to do it.

I do all maintenance stuff myself and do also more advanced jobs on the car. To me it is fun to do things like that, because i can see results immediately - which i don't do in my job often. But it takes time and a lot of research to do it right. And sometimes i have to do things twice. Like my axle boots, where i put too much grease in it and at a longer ride on the German Autobahn at vmax one axle boot just "exploded". But this time i know how to repair it and it will take less time than last time. Also now i have an Oetiker plier.

Regards, Markus

[johnsjmc]

JFP how many hours would you estimate to do chain pads both sides .I expect its only about $50 in parts. plus an oil change perhaps more is usually needed.

[JFP in PA]

Originally Posted by johnsjmc

JFP how many hours would you estimate to do chain pads both sides .I expect its only about $50 in parts. plus an oil change perhaps more is usually needed.

Obviously, that depends upon who is doing the work, but I would budget for 10-12 hours.

[johnsjmc]

Thats a little less than I thought I was expecting 15-18. The local Porsche dealer charges $110 an hour so with parts it,s about a $1500 repair. then do the IMS bearing and a clutch then whole works probably less than but approaching 5k. I had the sense from earlier in the thread that the repairs would be more than the car was worth.

[san rensho]

The other issue is are you absolutely sure the cam timing is out? The motor has to be hot, not idling in the garage until the temp guage goes to "normal" hot. It has to be taken out for an hour drive and caned hard hot. Ridden hard andput to bed wet hot.

Bank one timing on my car would easily vary 2 degrees from cold to hot.

[Roger1965]

No I'm not sure they are out that far. I am going off numbers provided by the previous shop I used, which I have stopped going to. I am sure they did not follow the correct warm up procedure.

But I do have about a half second of chain rattle on cold start which means I should probably look at the chain pads.

[Jake Raby]

Originally Posted by Roger1965

No I'm not sure they are out that far. I am going off numbers provided by the previous shop I used, which I have stopped going to. I am sure they did not follow the correct warm up procedure.

But I do have about a half second of chain rattle on cold start which means I should probably look at the chain pads.

Thats a symptom of tired tensioners.

[Need_for_speed]

Originally Posted by Jake Raby

Thats a symptom of tired tensioners.

+1 on the tensioners. I had a brief rattle on startup. Changed out all three tensioners. Problem solved. One of the tensioners was very weak.

FYI, I can't remember the specifics, but there was an upgrade to the tensioners at some point, so make sure you do your research when you shop for the parts.