Heat Exchanger fitting
Discussion
I need to replace my 1983 SC heat exchangers. Not only is the cost cost of the components prohibitively expensive but so is the cost of fitting - I got a quote of £300 for the labour only.
Can anybody out there give me any advice on where to go to fit - i.e. who do a good job for a good price?
Also can anybody advise where I can get second hand exchangers from? I tried Douglas Valley breakers and Prestige Salvage but they do no attempt to remove them from cars.
Many thanks,
Nigel (Reigate, Surrey)
Can anybody out there give me any advice on where to go to fit - i.e. who do a good job for a good price?
Also can anybody advise where I can get second hand exchangers from? I tried Douglas Valley breakers and Prestige Salvage but they do no attempt to remove them from cars.
Many thanks,
Nigel (Reigate, Surrey)
elite motors northampton (by cosworth) are quite reasonable, i want stainless steel on mine but the price rockets, and yes i know its for lifetime use too, but so's my wallet.
have you done an oil change yourself,by the way,if so how do you manage space-wise beneath car?
>> Edited by rich 36 on Friday 25th February 08:47
have you done an oil change yourself,by the way,if so how do you manage space-wise beneath car?
>> Edited by rich 36 on Friday 25th February 08:47
Rich,
Getting under the 911 is a real problem. I had a problem with a sticking starter motor for a while which required getting under the car and tapping the motor with an adjustable spanner to free. I did not have a problem with it, but my wife did (who was heavily pregnant at the time - needless to say I got a new starter motor fitted !!!).
To lift the car I've got a jacking plate which slots into the jacking point then use a trolley jack to lift her. The problem is that the car is still not high enough to get axle stands in - so I risk it, which really is not very clever. I got the jacking plate from Type 911 www.type-911.co.uk/.
Cheers,
Nigel
Getting under the 911 is a real problem. I had a problem with a sticking starter motor for a while which required getting under the car and tapping the motor with an adjustable spanner to free. I did not have a problem with it, but my wife did (who was heavily pregnant at the time - needless to say I got a new starter motor fitted !!!).
To lift the car I've got a jacking plate which slots into the jacking point then use a trolley jack to lift her. The problem is that the car is still not high enough to get axle stands in - so I risk it, which really is not very clever. I got the jacking plate from Type 911 www.type-911.co.uk/.
Cheers,
Nigel
Heat exchangers last a long time, so by the time you have to change them they have had years of being subjected to extremes of temperatures and elements. Everything will be corroded and studs are likely to break. A fixed price would have to assume everything goes wrong, so £300 sounds like quite a sensible labour rate. Because they are such a pain and expense to fit, if you go secondhand make sure they are good'uns (unless you're not keeping the car long).
I agree with what GR4 says. My local specialist - Autostrasse - use lots of heat on the studs, heating them up to almost white hot. I fitted a pair of good secondhand ones to my 911E when I restored it and managed to get the bolts undone. I personally think that you are unlikely to find a really good secondhand set of exchangers nowadays - after all, the youngest set will be 15 years old...and they all rot in the same places.
When you put it back together ask about the possibility of using stainless steel socket screws. They are quite expensive but it'll save you much grief next time.
I've not really heard anyone talking about it, maybe there's a reason, but it seems like a good idea to me.
Isn't there a hatch that allows access to the starter from inside the car?
I've not really heard anyone talking about it, maybe there's a reason, but it seems like a good idea to me.
Isn't there a hatch that allows access to the starter from inside the car?
rich 36 said:
Theres a hatch by footwell in rear, to get at gear linkage, and i suppose some wires, and throttle perhaps, but not sure about starter
Hmm that's the one in the middle isn't it. I don't know why, I seem to remember something about the starter hatch, although I've never looked for it. I would have thought it must be under the rear seats. I suppose if you have to take that lot out it could be more trouble than it's worth.
>> Edited by dilbert on Friday 25th February 21:06
the 'squabs' are glued in arent they?
I only go in there to apply leather polish once in awhile, otherwise Kosovans could have set up home there for all i know.
When the engine was out about 12 months ago, i looked all around the empty engine bay, but as for another access panel I do'nt know
there was a tunnel running straight down the middle which carried gear& throttle links,etc
I only go in there to apply leather polish once in awhile, otherwise Kosovans could have set up home there for all i know.
When the engine was out about 12 months ago, i looked all around the empty engine bay, but as for another access panel I do'nt know
there was a tunnel running straight down the middle which carried gear& throttle links,etc
Well I'm fully prepared for the fact that I could be wrong. I just scoured my manuals and all, and I couldn't find anything, so there probably isn't.
I've just got this idea that I saw a picture of a hatch with the end of the starter just visible. It's driving me nuts now, I might have to go and see the car (currently in storage) just to have a dig for it.
>>>>Just rereading my post, I'm beginning to think that the bloomin car projected an idea about it's starter into my head whilst I was asleep. It must be getting lonely!!!!!
>> Edited by dilbert on Friday 25th February 23:45
I've just got this idea that I saw a picture of a hatch with the end of the starter just visible. It's driving me nuts now, I might have to go and see the car (currently in storage) just to have a dig for it.
>>>>Just rereading my post, I'm beginning to think that the bloomin car projected an idea about it's starter into my head whilst I was asleep. It must be getting lonely!!!!!
>> Edited by dilbert on Friday 25th February 23:45
There is an inspection hatch under the carpet in the transmission tunnel behind the front seats. This is screwed down and provides access to the rear end of the gearbox IIRC. I can't recall whether the starter can be reched from here - I think not.
There's nothing under the seat squabs other than the floorpan!
There's nothing under the seat squabs other than the floorpan!
dilbert said:If you're concerned about them snapping on removal, this may be a backwards step because stainless bolts will still seize, and are more brittle than ordinary bolts, and much harder to drill out afterwards.
When you put it back together ask about the possibility of using stainless steel socket screws. They are quite expensive but it'll save you much grief next time.
That is an interesting point. I guess it's all a matter of degree. I can't quantify the relative sizes of the siezure, over the snapping problems.
What I do know though is that the exhaust manifolds on the 930 heads are NOTORIOUS. I can't help thinking that there must be a better solution.
I suppose that a big part of the problem is that access to the standard stud and nut arrangement is at best atrocious. With the hole through heat exchangers the only obvious access, it's literally keyhole surgery.
>> Edited by dilbert on Saturday 26th February 14:18
What I do know though is that the exhaust manifolds on the 930 heads are NOTORIOUS. I can't help thinking that there must be a better solution.
I suppose that a big part of the problem is that access to the standard stud and nut arrangement is at best atrocious. With the hole through heat exchangers the only obvious access, it's literally keyhole surgery.
>> Edited by dilbert on Saturday 26th February 14:18
As a further addition, I'm wondering now if Titanium socket screws might be the answer. They really would be expensive, but they might just do the trick.
>>> Just had a look, and you might expect to pay £10 per screw. Not bad, until you think that there are 12 of them. I don't know, how much might the damage cost?
>> Edited by dilbert on Saturday 26th February 15:06
>>> Just had a look, and you might expect to pay £10 per screw. Not bad, until you think that there are 12 of them. I don't know, how much might the damage cost?
>> Edited by dilbert on Saturday 26th February 15:06
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