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Longitudinal Acura Legend Drivetrain in a rear engine VW?
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914turboford
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PostPosted: Sun Jan 28, 2018 7:22 pm    Post subject: Re: Longitudinal Acura Legend Drivetrain in a rear engine VW? Reply with quote

While trying to position the drivetrain I realized what I really need is to make or at least mock up the hybrid axles. So of course I needed to install the 944 TAs first. To my pleasant surprise I was reminded that they are much wider, giving me maybe 3+ inches longer axles in each side, which, of course, will help with the angles. When I got these arms I wasnít smart enough to get the matching spring plates, so I started to modify mine. I expected them to be really hard like spring steel but they are as soft as butter to drill, saw and file. I plan to weld in a plate for the third eyelet. Speaking of eyes, you can see what one of the TAs did to me. Now I need one more 944 axle, or just the outboard half of one. Anyone got one? Or does that part cross over to any other cars?
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Danpa
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PostPosted: Mon Jan 29, 2018 4:11 am    Post subject: Re: Longitudinal Acura Legend Drivetrain in a rear engine VW? Reply with quote

Have you considered making a whole new frame instead of cutting up your old one?
I may be wrong but, it appears that the new drivetrain might be quite a bit heavier than the original and the torsion bars in the rear wont be strong enough to support it.

Just my 2 cents...

Dan
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914turboford
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PostPosted: Wed Jan 31, 2018 10:28 am    Post subject: Re: Longitudinal Acura Legend Drivetrain in a rear engine VW? Reply with quote

Danpa wrote:
Have you considered making a whole new frame instead of cutting up your old one?
I may be wrong but, it appears that the new drivetrain might be quite a bit heavier than the original and the torsion bars in the rear wont be strong enough to support it.

Just my 2 cents...

Dan


No, I have not seriously considered that.

I think it is super cool that you can fairly easily swap near exotic car parts (OK, maybe an early 944 isn't all that exotic, but a later 951 kinda is) onto a 1303 pan for chump change.

I will be running 944 aluminum TAs with big vented rotors (hopefully pick up some rear Brembos from a 944t eventually) and I already have monster 928 Brembos on 944 spindles up front.

Yes, this is 1980's tech at best, but I still think this part of the project is somewhat elegant. As to whether the rest of it will turn out that way, the jury is still out.

Also I would note that people have hung some pretty heavy engines off the back of a relatively stock pan (with a suitable sub frame of course), including iron small block chevy's, so it must be possible. I don't think my setup will be any more rear weight biased than a twin cam subaru motor with a turbo, or a 6 cylinder air cooled Porsche engine.
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914turboford
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PostPosted: Sat Feb 03, 2018 5:02 pm    Post subject: Re: Longitudinal Acura Legend Drivetrain in a rear engine VW? Reply with quote

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Last edited by 914turboford on Wed Feb 07, 2018 7:55 am; edited 1 time in total
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914turboford
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PostPosted: Sat Feb 03, 2018 5:03 pm    Post subject: Re: Longitudinal Acura Legend Drivetrain in a rear engine VW? Reply with quote

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Last edited by 914turboford on Wed Feb 07, 2018 12:49 pm; edited 1 time in total
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914turboford
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PostPosted: Sat Feb 03, 2018 5:28 pm    Post subject: Re: Longitudinal Acura Legend Drivetrain in a rear engine VW? Reply with quote

I remade the driver's side engine mount and took off the AC compressor and now I can get the drivetrain where I want it. In fact, I think I will lift it up 1 to 2 inches. I mocked up the passenger side axle and I can get it pretty much dead level and almost straight into the differential. I'm gonna need some wider fenders, but the 18" Turbo Twists clear the suspension with ease.
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914turboford
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PostPosted: Sun Feb 04, 2018 5:27 pm    Post subject: Re: Longitudinal Acura Legend Drivetrain in a rear engine VW? Reply with quote

VW put a nice bolt hole in the shock mount to help engine swappers support their subframes
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914turboford
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PostPosted: Sun Feb 11, 2018 4:38 pm    Post subject: Re: Longitudinal Acura Legend Drivetrain in a rear engine VW? Reply with quote

Started working on the front engine mounts. I realize no one has replied for a while but I plan to continue updating
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PostPosted: Mon Feb 12, 2018 4:47 am    Post subject: Re: Longitudinal Acura Legend Drivetrain in a rear engine VW? Reply with quote

keep updating! I don't have any input, but I'm enjoying the show!
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PostPosted: Mon Feb 12, 2018 7:44 am    Post subject: Re: Longitudinal Acura Legend Drivetrain in a rear engine VW? Reply with quote

I'm looking for updates too Popcorn
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914turboford
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PostPosted: Mon Feb 12, 2018 9:11 pm    Post subject: Re: Longitudinal Acura Legend Drivetrain in a rear engine VW? Reply with quote

Thanks and good to know I have at least two spectators!
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PostPosted: Tue Feb 13, 2018 7:01 am    Post subject: Re: Longitudinal Acura Legend Drivetrain in a rear engine VW? Reply with quote

Danpa wrote:

I may be wrong but, it appears that the new drivetrain might be quite a bit heavier than the original and the torsion bars in the rear wont be strong enough to support it.

Just my 2 cents...

Dan


You could get bigger torsion bars to fix this problem...
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914turboford
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PostPosted: Wed Feb 14, 2018 7:09 am    Post subject: Re: Longitudinal Acura Legend Drivetrain in a rear engine VW? Reply with quote

turbotype1 wrote:
Danpa wrote:

I may be wrong but, it appears that the new drivetrain might be quite a bit heavier than the original and the torsion bars in the rear wont be strong enough to support it.

Just my 2 cents...

Dan


You could get bigger torsion bars to fix this problem...

I have some torsion bars from a 1987 944. Are they stiffer than stock and do they fit (right length and splines)?
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PostPosted: Thu Feb 22, 2018 6:05 pm    Post subject: Re: Longitudinal Acura Legend Drivetrain in a rear engine VW? Reply with quote

The car is now supporting the weight of the drivetrain. The way I have the spring plates positioned the car sits dead level, as measured by the running board and the half shaft angles are just about perfect. I was able to weld the left frame horn back on and incorporate it into the subframe
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PostPosted: Thu Feb 22, 2018 6:11 pm    Post subject: Re: Longitudinal Acura Legend Drivetrain in a rear engine VW? Reply with quote

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PostPosted: Thu Feb 22, 2018 9:01 pm    Post subject: Re: Longitudinal Acura Legend Drivetrain in a rear engine VW? Reply with quote

this is awesome, i'm stoked to see how it runs!

keep it up man!
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914turboford
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PostPosted: Fri Feb 23, 2018 9:57 pm    Post subject: Re: Longitudinal Acura Legend Drivetrain in a rear engine VW? Reply with quote

Thanks! I'm pretty jazzed about it also. This is a big milestone. I plan to work make the hybrid halfshafts next and/or work on the gearshift linkage. I'm concerned about the clutch linkage though. I though I could find a way to connect the VW cable to the Acura clutch fork, which is operated by an external hydraulic slave cylinder, but I'm starting to think that is impractical. I think I might need to put a hydraulic master in by the pedal.
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PostPosted: Thu Mar 01, 2018 11:13 am    Post subject: Re: Longitudinal Acura Legend Drivetrain in a rear engine VW? Reply with quote

I don't think there is another drivetrain that could move the weight any further forward that preserves the torsion tube and stock style rear suspension.
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PostPosted: Sat Mar 10, 2018 7:52 pm    Post subject: Re: Longitudinal Acura Legend Drivetrain in a rear engine VW? Reply with quote

I have the gearshift and clutch working
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PostPosted: Sat Mar 10, 2018 7:55 pm    Post subject: Re: Longitudinal Acura Legend Drivetrain in a rear engine VW? Reply with quote

I didnít end up using any u joints. Just basically a solid two piece rod that connects the VW shift rod to the Acura shift shaft. I think I will have a normal shift pattern but I probably wonít know until I get it running. I can shift into a lot of gears but not sure I can hit all 7. I need to disable the reverse lockout in the VW shifter. I plan to put a urethane sway bar bushing at the back of the pan for a little support.
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