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Randy, thanks for your comments on airfilter and tensioner pulley. Yes, that flat air filter (in my case for the weber 38/38) I have seen it on the web, but 1 3/4" thick will be too high. 1 inch at the max may be could work. I have also been thinking and looking for a tensioner pulley to put eighter before (pushing down the belt)or after (pushing up the belt) the supercharger for a better grip. But I am looking for the most "compact" tensioner available because, again, space, space, space. Also the base (that bracket holding the nose of the charger) on which I can fix the pulley is 50 mm away from the center of the belt. Have you an idea ?
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supercharger for austin healey ?
- Thread starter mudd
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Randy, shall post other pictures only next week. My camera doesn't work. Agree with your comments on a chain. Any mishap with one item (alternator, engine waterpump or charger) will damage all the others. You will see from the coming pictures that I already put an idler pulley between the alternator and waterpump, otherwise the belt wasn't even touching the waterpump.
HealeyPassion
Jedi Warrior
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Bertrand,
Thanks for posting... I think this is the first supercharger I have seen on a Healey 6. I'd love to know a lot more about the installation!
Cheers,
Steve
1963 3000 MKII BJ7 Works Rally Tribute w/EFI
https://stevesaustinhealey.com
Thanks for posting... I think this is the first supercharger I have seen on a Healey 6. I'd love to know a lot more about the installation!
Cheers,
Steve
1963 3000 MKII BJ7 Works Rally Tribute w/EFI
https://stevesaustinhealey.com
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Here's my supercharged Healey:
Wait for it:
APRIL FOOLS!
Wait for it:
APRIL FOOLS!
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LOL
Herewith some additional pictures of my supercharger installation, now completed except for the air filter. The engine runs well but I have to rejet my carb as it runs too lean under boost. An idler pulley between de alternator and waterpump was necessary to have a grip of the belt on the waterpump. Sofar there are signs of slipping with this V belt. Above the charger we can see the bypass actuator and a fuel pressure regulator (the SU electric pump is too powerfull) to avoid carb flooding. any further questions are wellcome. The charger pulley is custom made and can be reversed for larger or smaller pulley.
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Bob_Spidell
Yoda
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Are you using a stock SU fuel pump?
BTW, you can edit your own posts.
BTW, you can edit your own posts.
Hi,Just to keep you informed of my further works on my supercharger to my BJ8. - The carb manifold has been reworked so that that the carb has been lowered by 20 mm and canb accept a ramflow air filter fitting Under the Hood. - the boost was too low (2,5 psi) and a smaller supoercharger pulley has been made and fitted, boosting now at 5 psi, enough for this engine.- A pulley belt tensioner has been fitted to av oid belt slipping, in particular on the cranck pulley. Herewith some pictures of illustrating my comments.
andrea
Jedi Knight
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Any one experienced or consider this little compressor ?-https://www.rotrex.com/Home
for me easy to mount under the generator
for me easy to mount under the generator
Randy Forbes
Yoda
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I've got a lot of experience with centrigugal superchargers, but all on BMWs. The small case Rotrex (C-36, or C38?) would certainly take up less space than a Vortech unit, but I haven't yet seen this little puppy that you linked to.
The supercharger that I was tempting Greg with (page 2 of this thread) is going to be mounted on a 2000 M Coupe, possibly by the end of this week, assuming I get the pistons/rods in today and the cylinder head, cams, etc., installed...
That car I showed on page 2, my own 99 M Rdstr, is now running a twinscrew (positive displacement) supercharger. Talk about an awesome, and totally linear power delivery. Immediate throttle response, with boost right off idle, but just as docile at low speeds as it ever was__it only goes fast in relation to how far you push the pedal...
Mudd, I tested my supercharged BJ8 ont the dyno and the result is:125 hp at the rear wheels and 145 hp at the flywheel.This seemed not extraordinary, and I was a bit disappointed in first instance. Having gained information with AH specialists and on internet regarding AH real power of stock engines, we can forget the 148hp announced by Austin healey factory in the past. Have a look at the AHSPARES - FUEL INJECTION website in which they show a dyno chart "before" and "after" injection system installation. We can see there that the power of the stock engine "before" injection installation gives about 83hp at the rear wheels and about 104 hp after installation. If I compare these figures with the performance of my supercharged engine, I think I can be satisfied.
woww, i would have thought adding a supercharger would boost more power. i dynoed my engine after rebuilding it, 142 hp at flywheel and i think was about 95 at rear wheels. i know these engines are not exactly efficient in fuel or power, but now wondering if adding a supercharger would be really worth the cost. thanks for the into bertrand
GregW
Yoda
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What kind of cam are you running? For forced induction, less overlap would be better.
5
57_BN4
Guest
Guest
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How much boost pressure were you running?
The factory figures should be easy to achieve with a stock rebuilt engine by raising the c/r and a few other minor changes. Even the asthmatic Longbridge lump can produce it's claimed 102hp in standard trim + 9.3 c/r.
Andy.
My engine is pure stock, stock cam etc.. 9:1 c/r. My maximum boost is at 4,5 to 5 psi, not more. I already blew my(stock) head gasket. Changed it with the Denis Welch racing head gasket which will hopefully do the job. I probably can get more power out of my supercharger by increasing the boost and changing my main jets (richer) of my carb.