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Supercharger for EA81


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7 replies to this topic

#1 Dante

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Posted 29 August 2004 - 02:36 PM

I picked up a copy of Sport Compact on vacation because it included an article on my first Japanese car--a 1972 Datsun 510. While perusing the magazine, I saw an add for Procharger superchargers. That got me thinking.

I assume the prochargers cost too much to put on a $1,300 car. All the dealer websites I visited said "call for pricing." However, I stumbled on hints here and on a couple aircraft sites that someone might have retrofitted a Mazda supercharger onto an EA-81. Anyone have any details?

#2 Scoobywagon

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Posted 29 August 2004 - 03:45 PM

Don't know about a Mazda Supercharger, but Ive sorta been working on retrofitting an Eaton M90 (Thunderbird SC) to an EA81. So far, I need a custom manifold (working on it) and some better carburetion. I'm thinking about using a pair of weber side drafts for that. Not real sure, but I suppose we'll see what we shall see.

#3 Frank B

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Posted 29 August 2004 - 04:49 PM

Well other than the manifold, drive belt, and fuel management, It would probably be in your better interest to start with a turbo engine. This way you have the block and internals designed for the forced induction. But you could easily get by with lower compression pistons, or just run low boost. But if your going thru all the trouble with the modifications to the induction set-up. you will want to run high boost to take FULL advantage of the supercharger.

I believe the Eaton supercharger is on the buick 3800's too, as well as some Jaguar XJ6's, so they are available.

#4 Scoobywagon

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Posted 29 August 2004 - 04:55 PM

I'm starting with what I have, mostly as a proof-of-concept. If I can get it to work more or less the way I want it, then I'll move up to turbo goodies and start tweaking on it to get engine management all tuned up. Mostly, I thought this might work as a means to boost low-end torque for more 'wheeling goodness.

Either way, I'm just in the planning stages at the moment.

#5 carfreak85

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Posted 29 August 2004 - 08:36 PM

You might look for superchargers that were originally installed on small cars or used ones for british cars like MGBs and Midgets, etc.

#6 Dante

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Posted 31 August 2004 - 10:00 AM

Well other than the manifold, drive belt, and fuel management, It would probably be in your better interest to start with a turbo engine. This way you have the block and internals designed for the forced induction. But you could easily get by with lower compression pistons, or just run low boost. But if your going thru all the trouble with the modifications to the induction set-up. you will want to run high boost to take FULL advantage of the supercharger.

I believe the Eaton supercharger is on the buick 3800's too, as well as some Jaguar XJ6's, so they are available.

I'm sure you are right. I wanted to put a dual-range tranny in a turbo car and lift it, but I wanted an EA-81 NOW more ;)

Here is a link to the thread on the supercharged EA-81 with pics:

http://subaru.sonik....pics/18786.html

Looks like it was a Toyota supercharger on an EA-82.

#7 oddcomp

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Posted 31 August 2004 - 02:13 PM

hmm thats all mad maxish and stuff
as long as the s/c is not too big
you can get a custom drive pulley made for it
to provide the correct s/c rpm for x amount of boost

#8 MorganM

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Posted 31 August 2004 - 03:52 PM

TURBO




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