Making the type four rev higher Options

[Trekkor]

I have a VW Bug race car with a type four motor.

I would like it to safely rev up to 6500-7000 rpms.

What is needed to accomplish this?

thanks

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KT

[DBCooper]

That is SO cool. Well done. I don't know what else to say. Well, maybe "git er done!" That's outstanding. My son had that same bumper sticker on his slammed 72 144 in Santa Cruz. It caused a lot of confused looks.

It looks like you have things under control. Raising the final ratio in a T1 trans is easy enough. They were the original base for the Mendeola boxes so they're really pretty solid, and both Mendeola and Weddle have parts if you want to beef it up. The taller ring and pinion is something like $350. If you haven't had problems with the T1 transmission so far that might be easiest, but the 911 901 conversion has been done a lot so no mystery. I have no idea about flipping ring gears in a 914 901, but can't imagine that transmission is much different internally than the 911.

I also think you already know how to spin the T4 a little faster, but to me it sounds like you're actually there already, that your concern is more the endurance racing issues than more RPM's or horsepower. Give Fat a call, I think they can help, or point you at someone else who can. Even Weddle or Mendeola, that's what their customers do. Unless someone here has lots of T4 endurance racing experience and will chime in.

Good one, Trekkor. Looks like a lot of fun. Just to throw one more idea on the table I think you know Jeff already, with the LS1 244:
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