Corvair conversion Manx

dschwerdt · Posted: Tue Dec 01, 2009 9:58 am Post subject: Corvair conversion Manx

Help! I have a manx with a swing axle with reversed ring gear. I also am using a stock 80 hp Corvair engine. What I need is help finding a starter to fit. (OR somewhere that I can get mine rebuilt!) The problem is the Corvair rotates opposite the normal VW engine. And the starter has to bolt to the VW tranaxle. Any help is greatly appreciated. Thanks!

bim55 · Posted: Tue Dec 01, 2009 10:19 am Post subject: Vair Starter

What do you have now? A Corviar starter with adapter was pretty standard, but not the best? What flywheel 6V or 12V VW?

You can check Clarkes Corvair, google it, they have the old Corvair adapter or better yet, a reverse rotation VW starter.

If you have the 12V (200mm VW flywheel, the Porsche 928 starter bolts right up to the VW tranny and spins correct for the standard roation Corvair.

Good luck.
_________________
Boston Bob E.
www.bimelliott.com - www.deserterownersgroup.org

BL3Manx · Posted: Tue Dec 01, 2009 10:56 am Post subject:

I had never heard that about a 928 starter. Good to know

Here's what Clark's Sells:

http://www.corvair.com/user-cgi/catalog.cgi?function=fetch&find_page=OTTO-41

http://www.corvair.com/user-cgi/search.cgi?part=C8763

http://www.corvair.com/user-cgi/search.cgi?part=C11436

bim55 · Posted: Tue Dec 01, 2009 4:43 pm Post subject:

Yea, the 928 starter was a pleasant surprise. I use it now and it's way better than the old Vair w/adaptor. It's big enough to spin a V8, so the Vair 6 is not a problem at all. IT is a little on the heavy side compared to a small hi tourque unit.
_________________
Boston Bob E.
www.bimelliott.com - www.deserterownersgroup.org

BL3Manx · Posted: Tue Dec 01, 2009 5:59 pm Post subject:

Bob, What's your opinion on the reliability of a standard rotation Corvair engine on a Type 1 transaxle with a flipped ring gear vs. reverse rotation engine? The force on the gears is on the coast side vs. the drive side. Has your transaxle held up? Does it whine? Have you done anything special to make it more reliable? If you were going to rebuild a Corvair engine, would you go standard or reverse rotation?

Smyrnaguy · Posted: Wed Dec 02, 2009 8:40 am Post subject:

I had a Corvair Monza engine in a Kellison GT40 years ago. The engine was very reliable. Using the Corvair starter with adapter and concentric bushing not so reliable. The bushing constantly wanted to spin so I took the car to a starter shop to get them to pin the bushing. The clowns destroyed the bellhousing effectively removing the car from the road permanently. I sold it for peanuts afterwards. It was a shame too. The car was scary fast. It would pull a wheelie in any gear at any speed.

manxbuggy · Posted: Wed Dec 02, 2009 8:41 am Post subject:

Bruce Amacker · Posted: Wed Dec 02, 2009 9:42 am Post subject:

I did build a turbo Corvair powered rail but with a reverse engine instead of trans. I'd recommend that to anyone going inside the engine......

Image may have been reduced in size. Click image to view fullscreen.

Image may have been reduced in size. Click image to view fullscreen.

It was true fun on four wheels....

Good Luck!
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'69 Ghia, full body-off restored
'66 Deluxe Bus, under construction

bim55 · Posted: Wed Dec 02, 2009 10:17 am Post subject:

On the relaibility subject, I'm probably not all that qualified to respond.

I've heard the rotation argued both ways and I simply made the decision to go with a standard rotation corvair and not flip the VW tranny in my mid-engine configuration a few years ago, and it's worked out just fine for me.

Absolutely no problems to date with the rotation or 928 starter and I could not be happier. Popping out of gear is a regular problem on a tired or ill adjusted VW shifter, so I doubt that it's a rotation issue. There is no gear whine at all, or nothing different than any other buugy I've owned. I wish the Vair had a little more power, but it's very smooth, torquey and I really like the sound of the 6, it's just different.

For the tranny build, I discussed with my plans with Rancho and I believe they had some reverse rotation tricks they put into it, other wise, it's a Super Street or something like that kind of build. Rancho knows VW tranny's, or at least way more that I do.

Below are some notes from back in 06 when I first found out about the 928 rumors in some old Vair Froums, sort of incomplete, so I experimented a bit on the bench, I'll have to look for the photos, I can't find them right now.

- Bosch marks the rotation on each starter and the 928 shows an
opposite direction than a regular VW, that's perfect!

- I stuck it into a bench tranny I had and it mates correctly to the VW tranny, same bolts and fits the same hole?? Even with the larger diameter starter motor (remember it spins a V8 Porsche) it clears the
side cover of the VW tranny, more good signs.

- It's the self supporting style with no bushing required, similar to the automatic VW starter shown.

- If not the exact same gear, it's very similar, 9 tooth, the same as a 12V Bug starter gear, more good news.

- All of this leads me to believe that it actually will fit onto a regular 12V VW flywheel????

Note, I have not found the photos for this post, but if I do I can share them later.

Bosch part number??, but the application is something like a 83-93 Porsche 928 car. A different for Porsche anyway kind of car, front engine V8.

Good luck
_________________
Boston Bob E.
www.bimelliott.com - www.deserterownersgroup.org

BL3Manx · Posted: Wed Dec 02, 2009 10:43 am Post subject:

Well, I guess I'll be keeping a watch out for 928 starters.

Speaking of more power, check out this guys stroker 3.6 Corvair engine.

http://rbgault.com/Corvair_36L/

dschwerdt · Posted: Thu Dec 03, 2009 12:11 pm Post subject: original poster!

Sorry I haven't gotten back. Earning a living! I have a 127 tooth flywheel that is obviously lightened, 200 mm clutch and I think the starter was Corvair. There is an eccentric bushing in the trans. I checked Clark's Corvair, and 130 tooth ring gear, flywheel and starter is about $600 before shipping. A bit much for a new starter! It looks like I have a Corvair starter with an adapter welded onto it. I'm really surprised at all the response. How many Corvair conversions are out there?
Thanks for all the help! I'm still lookink. I'm also wondering if the Porche starter will work with the 127 tooth gear. Any help?

oil4kids · Posted: Mon Jun 18, 2012 4:04 pm Post subject: thank you 928 starter

Guys the 928 starter was really a help since my corvair starter never was able to turn over the turbo covair hot, but the 928 gear reduction is just perfect. thank you for the advice. All i can say is chuck the corvair starter and pick up a gear redux.

BL3Manx · Posted: Mon Jun 18, 2012 5:39 pm Post subject:

I'm glad you dug up this old thread. I'd completely forgotten about that 3.6L stroker Corvair. All the tech drawings are still there complete with 3-D photos, but he never got around to posting the final results. Talk about a torque monster. This is the last think I've seen. It says he had head gasket problems of all things

http://corvaircenter.com/phorum/read.php?1,77523,77971

JustBuggy · Posted: Wed Jun 20, 2012 3:10 am Post subject:

Years ago I did a blueprinted 180 turbo Corvair in a bug. I went with the reversed cam in the turbo engine since I already had the engine apart.

I had zero problems with the transmission popping out of gear and no gear whine. This was the way that trans was meant to rotate., I figure why mess with it since it's getting A LOT of extra stress thrown at it.

manxcraig · Posted: Fri Jun 22, 2012 8:38 pm Post subject:

One of my buggy friends back in high school (40 years ago) had a Corvair buggy with a Hadley (spell?) Transvair kit. It solved all problems by using the Corvair transaxle. Anyone still running one?
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69 Meyers Manx II on 65 pan, 1 owner !
WANTED, Meyers Manx license plate frames, repo OK, don't like the new smiles per miles ones.

BL3Manx · Posted: Fri Jun 22, 2012 9:24 pm Post subject:

I put a Hadley Transvair in a Tow'd. I'd stick with reverse rotation engine as first choice and a flipped ring gear/(Pro-Street)beefed up trans with a 928 starter as second choice.

http://www.thesamba.com/vw/forum/search.php?search..._chars=200

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