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Okay! Now I understand your point! The crankshaft was the most difficult thing to get right - due to its length and probably also the slightly reduced strength through the split pins? The early development engines had crank failures (fatigue failures). It shows you however, how thin and...

Everything on this engine is a work of art. You need to check out the crank in life - its forged, super light-weight, superbly finished - just the exact opposite of an LS crank in every view you look at it. An order of magnitude more complex. It amazes me that they could mass produce these...

The big down-side is that you cannot freely program the ECU and all the associated sensors on the engine. I do not plan to use any of the VW electronics as I want to be in charge of all parameters myself - using a Holley EFI system... Last but not least, driving other modern V12s - I really do...

Hi Joel, The W12 is an even-fire V12, and it has exactly 60 degrees of rotation in between the firing events. The associated mechanical assembly is super complex - The centerlines of the bores do not pass through the crankshaft axis, in an attempt to "make the two cylinder banks that are merged...

Thanks for that Information, really appreciated! It is interesting to see that VW has chosen an external crank trigger wheel, mounted on the flexplate. You can see that the crank bolts have asymmetric spacing, just like the flexplate rivets and the crank trigger wheel itself. The crank trigger...

Thank you for the replies! I contacted a few folks - seems that I am on my own with this. Few learnings over the last days: The G86.20 gearbox can fit a flywheel with a diameter of about 280mm. Question: is this the same for other Porsche gearboxes or do some allow for a larger diameter...

Hi there, I am looking for the flange and bolt pattern of the W12 engine: Does anyone have that? I am mating this to a Porsche G86.20 gearbox: Can anybody help? This engine/transaxle combination is ultra compact. I measure less than 80cm between the output shaft and the most forward...

The G86/20 has the exact same gear ratios as the G96, but the diff is "swapped around" such that you don't have to run the gearbox upside down. It seems that it is made from the same internals as the G96. Surly, the G86/20 is preferable for building a mid-engine kit car as compared to the G96...

Thanks for the reply - do you have pictures and probably a website where I can check these out?

I totally agree with you. I need to modify them - with a single spherical rod end bearing where the upper wishbone connects to the case upright. Does this make sense to you?

Hi Joel, absolutely agreed, so I took some measurements from the sketch of the frame that I have. It isn't much space - I was originally intending to 3D-scan the body and the frame, then scale the car up by 10% - but I have too many projects going on so this must wait for now and I need to focus...

These are for sure nice engines - but I can buy M120 Mercedes Benz V12 engines over here (same that are used in the Pagani Zonda) for just under 5k. So this is my primary choice - I want to use my money on a GT40 replica thereafter, so I want to be mindful with the budget.

Fran Hall from RCR can make a complete kit for using a Porsche G96 on the BMW M70 as well. I guess this is all custom and anything can be made. Thanks for the link on that gearbox adapter plate. I guess I would use the G31 instead of the Audi 01 gearbox, according to this post, correct...

I guess only the Jaguar V12 is running a single distributor correct? That makes it "more of a real V12" than the others that all run 2x distributors. Then I can use a Holley EFI system - with TBI (throttle body injection) - these systems don't necessarily need to know how many cylinders are...

Thanks for the link! That is some good information there for sure.

Hi there everyone! I have been following this forum ever since I was a teenager - and I am finally in the position to build a replica car. I absolutely love the GT40s, and I am planning to build one - but for now - I came across this Countach replica that I want to finish first...