While I'm waiting for a reply from PR, I figured I'd throw this up in the forums. Those of you that used his low alt mount, what oil filter adapter did you use? The adapter I have makes the oil pressure sender face the rear of the car which interferes with the bracket and causes the alternator to not have full adjustment. It was "ok" until I put the fiero's oil pressure sender in it, but the fiero's sender is physically much larger than the grand prix's.

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Use the smaller 88 2.8L sender instead of that huge can. Its also more reliable. Problem solved.

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Where do I get the smaller sender from?

P.S. This is why I love these forums, little tips like these

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[This message has been edited by JamesCurtis (edited 07-16-2009).]

88 Fiero sender? I got my last one from rockauto.com. genuine Delco

Ah, it's weird because I used the sender that came from an 88 gt. There must've been some sort of redesign?

Here's a picture of rockauto's


The one i'm using has a silver body that looks a little different.
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[This message has been edited by JamesCurtis (edited 07-16-2009).]

Why would you need your alternator to be adjustable? That's what the belt tensioner is for.

I just threw that in for a little more info, what concerns me the most is not being able to mount the bracket because of the interference

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I used a 2000 GTP oil filter adapter and it points the pressure sending unit (from an 88 Fiero) at the alt. But its not interfering with mounting the bracket. My bracket was on before I put the pressure sending unit on. In reverse order, there might have been a problem. I'm not sure though.

I'll try it out tonight, but I can't see it working in reverse order either

I tried doing it the other way around and had just as many problems. Not only does the sender conflict with the aluminum bracket, it also conflicts with the lateral bar PR supplies.

Comparison shot - 88's left, original 2000 gtp right


Attempting to make the comparitively puny gtp oil pressure sender fit


Attempting to make the large 88 sender fit


Passenger side shot of the adapter for better identification


Should I be looking for an adapter more similar to this?

[This message has been edited by JamesCurtis (edited 07-18-2009).]

Put a 90 degree NPT fitting on it and slide it sideways... I didnt need to on mine but I thought it looked better.

I tried doing it the other way around and had just as many problems. Not only does the sender conflict with the aluminum bracket, it also conflicts with the lateral bar PR supplies.


[quoteAttempting to make the comparitively puny gtp oil pressure sender fit
[/quote]

The Grand Prix sender is for an "idiot light". It will pin the oil pressure gauge as its an on/off switch. You need the 88 Fiero sensor to drive the gauge
Should I be looking for an adapter more similar to this?

It will probably work but why drive up the cost? I don't know what kind of alternator mount design does not allow enough room for the 88 OP gauge sensor to mount but as the Darkman said a 90* wide angle brass elbow ( i believe 1/4" NPT) might work.

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" THE BLACK PARALYZER" -87GT 3800SC Series III engine, 3.4" Pulley, N* TB, LS1 MAF, Flotech Exhaust Autolite 104's Custom CAI 4T65eHD w. custom axles, HP Tuners VCM Suite.
"THE COLUSSUS"
87GT - ALL OUT 3.4L Turbocharged engine, Garrett Hybrid Turbo, MSD ign., modified TH125H
" ON THE LOOSE WITHOUT THE JUICE "

I'll head to the hardware store later today, 90* elbow it is

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Low mount alt assemblies from FastFieros do not have this problem. I also use the 3800 alt that is from 99-07.



http://www.fastfieros.com building a better future for your car.

quote Originally posted by FastFieros: Low mount alt assemblies from FastFieros do not have this problem. I also use the 3800 alt that is from 99-07.

But they do interface the trunk in some situations... At least when I made low mounts that cleared the oil filter they got in the way with the trunk when used in manual setups with modified engine location.

quote Originally posted by darkhorizon: But they do interface the trunk in some situations... At least when I made low mounts that cleared the oil filter they got in the way with the trunk when used in manual setups with modified engine location.

If it hit the trunk then you did something wrong. I have built about 4-5 of the low mounts mentioned by FF and none of then have come close to hitting the trunk area. There is enough room where you can swing the Alt in where it will be no where near the trunk.

It's in! The 90* 1/4" "street" elbow fixed the problem. Thank you for all of your help!

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Hey James. The alt bracket is not designed for that oil filter adapter. The ones i have been using is from a 3800 NA with the filter adapter's oil sender hole is vertical. Or u could notch the lower brace. Or install the 90* fitting like u did. Or use Loyde's set-up. lots of options.

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quote Originally posted by Dennis LaGrua: The Grand Prix sender is for an "idiot light". It will pin the oil pressure gauge as its an on/off switch. You need the 88 Fiero sensor to drive the gauge

This I didnt knew..I want more then an on/off reading...maybe I can use the supplied sender of the (aftermarket) gauge.. So is the stock gtp sender not used by the ecm or fuelpump, but only for an "idiot light" ?