Fuel rail cover insulation
10-27-2009, 02:43 PM
#1
Drifting
Thread Starter
Fuel rail cover insulation
I'm doing some cleaning around the engine bay today and took off the fuel rail covers.
On my previous 1988 S4 the foam around the fuel rail was in such a crumbly state that I removed all of it during an intake job.
On my 1991 S4 the cover is integrated with a kind of rubbery substance which is still completely intact and feels pretty supple. The p/n (928.110.117.00 for lhs) is same as in the 91 PET which I always used for the old car, so it's interesting that it seems to be same p/n as the old car would have had?
I had read that GTS introduced rail covers with integrated foam, but I never knew S4s had them too, assuming mine are original which I believe they are from service records.
Anyone know when the design of the rail covers changed? Just curious, and interesting how parts were continuously improved in the Porsche way.
Photo shows underside of one of the rail covers.
On my previous 1988 S4 the foam around the fuel rail was in such a crumbly state that I removed all of it during an intake job.
On my 1991 S4 the cover is integrated with a kind of rubbery substance which is still completely intact and feels pretty supple. The p/n (928.110.117.00 for lhs) is same as in the 91 PET which I always used for the old car, so it's interesting that it seems to be same p/n as the old car would have had?
I had read that GTS introduced rail covers with integrated foam, but I never knew S4s had them too, assuming mine are original which I believe they are from service records.
Anyone know when the design of the rail covers changed? Just curious, and interesting how parts were continuously improved in the Porsche way.
Photo shows underside of one of the rail covers.
