944Ross

I updated both my '84 and '86 NA cars to the turbo style pump with belt slipper. On the '84 I used the old radiator hose with no problem, but I discovered yesterday the "86's PS pump pulley has rubbed on the hose -- I was about 5 minutes from a big problem! AFAIK it was a late model NA hose.

When an NA car is fitted with the turbo pump, do you need to use the turbo hose? or is the late-model NA hose OK?

944Ross

Bump? It may seem like a dumb question but I'd like to avoid buying two hoses to see which fits best.

Liftedbronco

i can confirm that on my 84 when I did this I just reused the hose that was on there.

perhaps you could loosed the clamps and twist your hose such that it clears the ps better?

Rock

You can reuse the old hose. There is however a different part number for the old hose, the hoses uses on the turbos, and then the turbos 88 and on use another hose. The 88 and on hose just has a rubber reinforcement on it, the difference between the other hoses, if any I am not sure.

The turbo waterpump shouldnt really change the position of that hose much. Even so, its a scary close fit to that PS pump. Go under the car and wiggle the PS pump. Make sure the pump hasnt worked itself loose (common believe it or not), and make sure that you have the hose all the way tight.

944Ross

Thanks for the replies. The tight clearance is fore-aft, it appears the engine moves enough forward under braking (or -?-) to make contact. I can gain about 1/4" by cutting the radiator end of the hose a little shorter, which should be enough. The turbo hoses look to be a little more rectilinear, instead of sweeping curves they are near right angles, which would really help.

The late-model (85.5+) radiator support is different than the early cars, and the net result is that it is much tighter than the early cars at this point.

944Ross

Got my chewed-up hose off today, and compared it with a spare. The one that hit the PS pulley is (well, was) a turbo piece. My spare is a '86 NA hose. I had bought a new hose at NAPA, their listing is obviously incorrect; while they do have the correct ones available, the ones they stock are early NA's and it lists them as working on late NA's too.

There is virtually no difference between late NA and the turbo piece; and the turbo piece hit. The turbo piece probably wouldn't have been a problem if I'd trimmed 3/8" off the bottom end to move it away from the engine.

Mike C.

You are correct. I'm certain the turbo pump casting does not change the position of the hose to pump mount lip. I'm prett sure the turbo radiator requires a longer hose because the rad inlet is physically lower relative to the water pump.

944Ross

I don't know, Mike, the turbo and NA late model hoses are as identical as can be. I think the only difference may be that reinforcement or protective sleeve on the NA hose. The NA hose in the pic looks a little shorter because the PO had it wadded up with the lower connection bent in half.

Mike C.

I meant compared to the early NA (as in your photo). I think the sheet metal must be different around the radiator in the post 85 cars and this either lowered the rad or made it taller (extending it further down).

944Ross

Oh OK, I see your point. Yes, I had to repair the radiator support on the '86, and it is completely a different piece than my '84's.