Radiators and Supercharging...
#16
Chronic Tool Dropper
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Nick--
The only 'fitment' issues I've heard of with any of the aftermarket radiators is the width at the bottom saddle. A little creative trimming of the rubber support here lets the new one sit down where it's supposed to. I suspect that the profile of the bottom of the new one is just a little different. You know going in that you'll want to trim, so it's really simple to just do it before you even try to fit the new one in there.
The only 'fitment' issues I've heard of with any of the aftermarket radiators is the width at the bottom saddle. A little creative trimming of the rubber support here lets the new one sit down where it's supposed to. I suspect that the profile of the bottom of the new one is just a little different. You know going in that you'll want to trim, so it's really simple to just do it before you even try to fit the new one in there.
#17
Burning Brakes
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Hi Nick,
Speaking from a MURF 928 perspective regarding the original question.....
The thicker aftermarket radiators make for a tight fit for the air box on the MURF 928 sc kits. Some people have done it with no problems and others had some definite fitment issues.
Most problems with radiators are either they are clogged, causing over heating issues, or they are leaking. Either way a new stock style radiator solves both issues and guarantees no fitment issues with the MURF 928 kits.
The rest of the forced induction kits on the market do not have any problem with the aftermarket radiators (that I know of) because they get air to the sc or turbo in a different fashion.
400 rwhp typically needs between 6-8 psi boost. The MURF 928 Stage 1 kit did a little over 400 rwhp on an 87 automatic with cats. Other Stage 1 kits have done about the same, little less-little more, but with various other mods to the cars. For the record, MURF 928 Stage III kits get about 500 rwhp.
Hope this helps.
Speaking from a MURF 928 perspective regarding the original question.....
The thicker aftermarket radiators make for a tight fit for the air box on the MURF 928 sc kits. Some people have done it with no problems and others had some definite fitment issues.
Most problems with radiators are either they are clogged, causing over heating issues, or they are leaking. Either way a new stock style radiator solves both issues and guarantees no fitment issues with the MURF 928 kits.
The rest of the forced induction kits on the market do not have any problem with the aftermarket radiators (that I know of) because they get air to the sc or turbo in a different fashion.
400 rwhp typically needs between 6-8 psi boost. The MURF 928 Stage 1 kit did a little over 400 rwhp on an 87 automatic with cats. Other Stage 1 kits have done about the same, little less-little more, but with various other mods to the cars. For the record, MURF 928 Stage III kits get about 500 rwhp.
Hope this helps.
![](http://i267.photobucket.com/albums/ii310/lutz928/porsche/PorRad/DSC02639Small.jpg)
This was the C & R that was in my car for about 6 or 8 months and I knew it was a tight fit but did not realize the "air box" was rubbing this hard against the Rad. I had shifted eveything forward, but not far enough.
This pic. was taken during the install, and I had cut the A/C condensor brackets shorter moving the condensor forward and mounted the Rad. where that the side tank was pushed all the way touching the motor for the headlights.
![](http://i267.photobucket.com/albums/ii310/lutz928/porsche/PorRad/DSC02392Small.jpg)
![](http://i267.photobucket.com/albums/ii310/lutz928/porsche/PorRad/DSC02395Small.jpg)
If you are going the with the thicker rad. just be sure the air box is not rubbing hard against the Rad.
Hope this helps.
#18
Burning Brakes
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I'm running the Murph StageIII using a stock radiator that had the plastic end tanks replaced with aluminum and the radiator cleaned out while the end tanks were off. No fitment issues, car runs quite cool....and VERY fast!
Get your car running well before you do the supercharger install and you'll enjoy both the install and the end result. The install is not hard to do. Probably the most fun I've had in the garage was installing the supercharger kit.
Get your car running well before you do the supercharger install and you'll enjoy both the install and the end result. The install is not hard to do. Probably the most fun I've had in the garage was installing the supercharger kit.
#19
Administrator - "Tyson"
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Few years ago I was stuck in Chicago rush hour traffic behind Tim Murphy, both of us Supercharged on a 95+ degree day. We didn't move very far for about an hour.
Tim had the A/C on high the entire time (not me, blew the compressior few days before the trip). Both of our cars were running at the bottom white line at all times.
Once my car is traveling past 20mph or so, I don't even need the fans.
If you live in Las Vegas or Death Valley type area, maybe then consider an upgrade to handle things. People with bone stock 928's in those kinds of climates have cooling issues.
Tim can handle the pricing question, we are working diligently to update the website.
You are in Michigan? Road Trip / Install Party!!!! We like doing those.