A quick question about the Rjes bellhousing

Bigbadbugga

Hi Richard,

I am in the process of mocking up a gearbox mount to fit my 002 box in a 72 Beetle.

What I need to know is if the two large 'lugs' on the top of the 002 bellhousing are the same on your bellhousing.

Would I be right in assuming that because of the larger flywheel aperture the lugs will only be accessable from the front (read front of car)?

and finally, are they strong enough to mount the gearbox from?

I originally wanted to buy the bellhousing before doing the mock up but I need a few more weeks to gather the funds together.

thanx,

John
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Located near Liverpool.

Building a full custom 1972 Beetle with an EJ25 (n/a sohc),Porsche 944 IRS conversion and Rjes bellhousing.

rjes · Posted: Fri Jun 05, 2009 12:35 am Post subject:

What I need to know is if the two large 'lugs' on the top of the 002 bellhousing are the same on your bellhousing. They are 4mm further back on my bell housing, but otherwise in the same position.

Would I be right in assuming that because of the larger flywheel aperture the lugs will only be accessable from the front (read front of car)? Yes

and finally, are they strong enough to mount the gearbox from? Yes, in terms of the bell housing. It's cast from LM25 alloy, heat treated to grade TF - equivalent to 356-T6, which is one of the toughest grades of aluminium there is. As far as I know, nobody has tried mounting the engine and gearboc like that, but the steel brace fitted by VW to take load off this join in the South African 5 cyl Audi T25's suggests that the bell housing to gearbox join is a weak spot.
The bending moment caused by the axle torque reaction under acceleration could theoretically be too much for the bolted join to the gearbox with an entirely cantilevered engine mount. The 10 M8 bolts are screwed directly in to the magnesium gearbox, and magnesium is quite soft. I have never seen any failure of this joint, but if one failed, I'd suspect it would be with a heavy high powered engine (such as a turbo) cantilevered directly off the gearbox (i.e. in a Beetle). If you try it, and assuming the engine will be rubber mounted, the rubber mounts will need to be considerably further apart than the lugs on the bell housing to react the engine torque
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Regards,

Richard,

R J Engineered Solutions
Quality Subaru Powered VW Components
www.rjes.com

Bigbadbugga · Posted: Fri Jun 05, 2009 11:22 am Post subject:

Thanx for your reply, the questions I had on the bellhousing lugs where prompted by this thread on the samba, scroll down and you will see the bellhousing mount they use on rails.

http://www.thesamba.com/vw/forum/viewtopic.php?t=143138&postdays=0&postorder=asc&start=40[url]

in addition to this mount I am also considering extending the frame horns and utilising the subaru engine mounts.
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Located near Liverpool.

Building a full custom 1972 Beetle with an EJ25 (n/a sohc),Porsche 944 IRS conversion and Rjes bellhousing.

MostlyMonki · Posted: Fri Jun 05, 2009 12:28 pm Post subject:

would be interested to see how you extend the freamehorns. my engine is just hanging off the gearbox at the moment, but its solid mounted and seems pretty stable.
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'72 Ratty Bug - Subaru EJ20 Turbo motor.

Bigbadbugga · Posted: Sun Jul 19, 2009 5:23 pm Post subject:

Richard, do you have the new stock of bellhousings yet?

I have some money burning a hole in my pocket

_________________
Located near Liverpool.

Building a full custom 1972 Beetle with an EJ25 (n/a sohc),Porsche 944 IRS conversion and Rjes bellhousing.

rjes · Posted: Fri Jul 24, 2009 12:00 pm Post subject:

They are being machined now. The machinists have promised to finish some of the batch today, then they are closed for two weeks. Finishing the batch is then the 1st job after the holiday.
_________________
Regards,

Richard,

R J Engineered Solutions
Quality Subaru Powered VW Components
www.rjes.com

Bigbadbugga · Posted: Tue Apr 06, 2010 2:03 pm Post subject:

rjes · Posted: Thu Apr 08, 2010 1:56 am Post subject:

The lugs are in the same place, except for being 4mm further back in the chassis, and you are correct that they are only accesible from the front, and why. In a late bay they are an additional engine / gearbox mount. The engine is also mounted from below. I doubr that they would break if you didn't mount the engine from beloe too, but I wouldn't really recommend it. Thay are a bit close together to react all the torque from the engine.
_________________
Regards,

Richard,

R J Engineered Solutions
Quality Subaru Powered VW Components
www.rjes.com

Bigbadbugga · Posted: Thu Apr 08, 2010 10:12 am Post subject:

Tomasz · Padawan Joined: 11 Feb 2009 Posts: 62 Location: London

It's a good idea and it's nicely done. I'm going to do similar thing.
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Calm Bug