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  #11  
Old 31-12-17, 16:28
Lolat492 Lolat492 is offline
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Agree, but it is the starter motor that is the real problem.
The flywheel and starter are an awkward size and today just squeeze into the chassis of the car, the other road gearboxes all have a larger 'diameter' of flywheel and hence starter position.
This is what stops a Hewland box being a simple bolt-on and other good boxes like the Subaru Impreza (converted to 2 wheel drive).
It is always the starter position.

Splicing the Porsche 'bell housing' to the AUDI box bell housing /main case would get around this.

Here is a picture of the car, box and the small aftermarket starter I'm using 'today'.
The box is a Porsche 915 road box, not famed for it's speed of change or ease of use...

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  #12  
Old 31-12-17, 17:37
stevieturbo stevieturbo is offline
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If that's your starter sort of top left of the box image...it's not too far akin from a Subaru.

Subaru gears make all manner of adaptors etc to use Subaru boxes.

http://www.subarugears.com/
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  #13  
Old 31-12-17, 21:22
Lolat492 Lolat492 is offline
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Thank you for the link, not heard of them before.
I have an STi V3 box here!
I tried it in the Lola's chassis and it is too large to fit.
The starter is more 11.00 o'clock than the 911s 10.00 o'clock.
Lots of other issues too, esp the centreline of the output flanges!
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  #14  
Old 31-12-17, 21:29
stevieturbo stevieturbo is offline
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Quote:
Originally Posted by Lolat492 View Post
Thank you for the link, not heard of them before.
I have an STi V3 box here!
I tried it in the Lola's chassis and it is too large to fit.
The starter is more 11.00 o'clock than the 911s 10.00 o'clock.
Lots of other issues too, esp the centreline of the output flanges!
When they swap them to other cars, they have a rear end to remove the centre diff and shorten the box by quite a bit.


Maybe it's the same box...what about likes of Porsche Boxster ? ( I think they're all Audi related options )
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  #15  
Old 31-12-17, 22:50
Lolat492 Lolat492 is offline
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Yes, the Audi, Passat are all the same as the Boxster except for the price!
Hence considering the A4 box originally.
All those also have the starter on the gearbox side but at a larger radius than the tight 911 design.
Ideal would be to replace the current drivetrain with a 300+ bhp Boxster drive train, not as easy as it might sound.
The Lola chassis was designed for a Ford Pinto engine with Hewland Mk7, all very narrow designs.
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  #16  
Old 31-12-17, 23:19
stevieturbo stevieturbo is offline
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Subaru turbo engine and Subaru box modified for "front" drive only ? Easy 300+ available there and would be more compact than the Porsche

The 5 speed Subaru boxes are fairly small/narrow, and if going into a light vehicle strength shouldnt be an issue ( 5 speeds arent that strong )

Or for Audi...1.8T engines bound to be a light easy 300+ option ?

Or are turbos not allowed ?
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  #17  
Old 01-01-18, 00:22
Lolat492 Lolat492 is offline
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Anything is allowed in sports Libre, and all those options have been thought through some years ago.
I've got some pics of the Subaru box almost in the chassis from those dimension checks, I'll dig them out and you will see what stops all these installations, the chassis to the bell housings.
It all fouls where he top rear suspension link is.
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  #18  
Old 01-01-18, 09:30
Lolat492 Lolat492 is offline
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It's been interesting to look back at the pics I took of the Subaru box in the Lola.

911 on the left, Impreza on the right.




And the trial fit:



Looks deceptive because there is a major mis-alignment issue with the drive shafts. They clash with the exhaust and more.
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  #19  
Old 01-01-18, 10:00
Lolat492 Lolat492 is offline
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Why not just fit a complete turbo Impreza drive train? You might ask!

The Impreza drive is no stranger to me so I feel comfortable finding the pit falls:

Adding water radiator(s). 911 is air cooled
Adding turbo intercooler into a good air stream. Not a lot of frontal area on the Lola.
Converting the drive shafts to suit the March F2 rear suspension rear hubs.

Positives are
Tons of useable power and torque, 350 is easy (911 is 247)
Fuel injected/ mappable
Short engine length, would help radiator placement/fans
Relatively cheap donor parts

Other issues are the 911 engine seems to suit the old Lola...but I'm Old Skool at times.
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  #20  
Old 01-01-18, 10:44
stevieturbo stevieturbo is offline
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If the Boxster gearbox was a better fit, there's a guy who runs a lovely MK1 Fiesta at Santa Pod with a Subaru engine in the back with a Boxster gearbox behind it. And it really is incredibly fast.
Obviously the engine would need water cooling, but if air is a difficulty for intercooler...a water based chargecooler would be another option

https://www.youtube.com/watch?v=CPdUu5iVKjk

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