Fuel Cooler Comparison
02-13-2014, 05:02 PM
#1
Rennlist Member
Thread Starter
Fuel Cooler Comparison
I'm just trying to quench my own curiosity as to the differences between the '84-89 (bottom) fuel cooler as opposed to the later '90-'95 cooler (top). Apart from the older being $500-ish and the newer being $600-ish new from Porsche, what is the difference performance wise, if any?
As my '90 cooler has some thread damage, I am contemplating using the cooler from my '86.5 if there is no known performance difference. I'm assuming I would have to use the expansion valve from an '86 as well due to the support bracket that is "integral" on the '90 cooler, but a removable piece on the '86.5 cooler.
The only difference I can tell is that the body on the older fuel cooler is larger, so does that mean better cooling performance, and if so, why was it made smaller for later years?
Cheers!
Carl
As my '90 cooler has some thread damage, I am contemplating using the cooler from my '86.5 if there is no known performance difference. I'm assuming I would have to use the expansion valve from an '86 as well due to the support bracket that is "integral" on the '90 cooler, but a removable piece on the '86.5 cooler.
The only difference I can tell is that the body on the older fuel cooler is larger, so does that mean better cooling performance, and if so, why was it made smaller for later years?
Cheers!
Carl
02-13-2014, 05:08 PM
#2
Different fittings for the engine side along with what you noted. Get a used one from one of the vendors and don't bother trying to make one fit where it isn't supposed to.
02-13-2014, 05:21 PM
#3
Rennlist Member
Thread Starter
Ah, I see the light! Thanks Sean!
The connectors are different, male vs female on the fuel return loop. Got it! But why, why, whyyyyyy?
Less chance of leakage? Or because Porsche couldn't leave it alone? Hehe, thanks, I'll order a used '90 cooler.
Cheers!
Carl
The connectors are different, male vs female on the fuel return loop. Got it! But why, why, whyyyyyy?
Less chance of leakage? Or because Porsche couldn't leave it alone? Hehe, thanks, I'll order a used '90 cooler.
Cheers!
Carl
02-13-2014, 05:32 PM
#5
Nope, it was switched mid 87. I hate doing fuel lines on the earlier ones as the connections are more prone to rounding.
02-13-2014, 06:26 PM
#6
Nordschleife Master
02-13-2014, 06:33 PM
#7
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02-13-2014, 07:43 PM
#8
Burning Brakes
(With all due respect to SeanR who is an expert) this only works with some gear wrenches. It depends on how 'thick' your gear wrench is. Mine did not work in this application, and so I needed to use crow's feet wrenches.
10-12-2022, 05:43 PM
#9
I’ve just been into the fuel cooler removal job. There is little room in front of the cooler to swing a wrench of any kind to free a 20-year-stuck-on fuel nut. I Just tried. The crows foot made the removal job a snap. It is quite possible to use the gear wrench to tighten the fuel nut, which won’t require much force and will provide better force sensory feedback than the crows foot.