After trashing my crank and flywheel at Portland this year, I have been busy in the shed doing the nessasay modifications to my old case so I can run a stock 2.1 WBXer 76mm stroke crank with bolt on full weight flywheel, now that shouldn't come off!!.
Shimo at Dunhams cut the rear main bearing saddle so I can run the std WBXer 3 piece bearing, all the other bearings on the T3 crank are the same as Beetle, I just had to modify the oil gallery for the bearing and make thrust washer locating tangs in the case with a small dremell and it is ready to go in.
The engine assembles just like a normal crank with a bit of care not to loose the inside thrust washer out of its locating tang, once the end float is set and the flywheel is on this in not a problem.
The engine is now all assembled and in the car with just a couple of small items to be sorted.
Here are a couple of photos of the WBXer crank in a T1 case, you will see the crank is not counterweighted 馃槀, T3 cranks are a lot heavier and stronger than a stock T1 crank and don't suffer from crank flex, the bearings on the engine I pulled the crank out of had done over 200,000 Ks and the main bearings were still good enough to go another 200,000, and the case was perfect.
Brad 路
Sweet ... now it just needs a buggy body to go in :>
dangerous 路
How hard will you rev it David?
Menangler 路
It will probably see 7000-7500 rpm like the old crank did. time will tell!!
colin 路
Hpoe to see you there Dave,wouldn,t be a drag meet with out you.
Cheers Col
1303Steve 路
Hi
You can buy 200mm flywheels to bolt straight onto the T4/WBX crank now from CIP or Jake Raby.
I think the WBX was redlined at 6250 rpm from the factory.
I was going to dowel in between the flywheel bolts if I had any issues on my WBX.
Steve
dangerous 路
I did a counterweighted WBX crank and the 5 dowel set up for a racer some years ago.
It held up very well without a wedge mate but he used some pretty spiffy bolts I recall.
I read in europe a fellow using a stock 69 crank and light parts
expects reasonable life from his 1603cc engine
using as much as 9000. (n/a ran 11.58!!)
Although the short stroke and light reciprocating parts helps a hell of a lot.
VWFREAK 路
Great stuff Dave, goodt to see you back in action.
pete wood 路
dangerous wrote:I did a counterweighted WBX crank and the 5 dowel set up for a racer some years ago.
It held up very well without a wedge mate but he used some pretty spiffy bolts I recall.
I read in europe a fellow using a stock 69 crank and light parts
expects reasonable life from his 1603cc engine
using as much as 9000. (n/a ran 11.58!!)
Although the short stroke and light reciprocating parts helps a hell of a lot.
love to see the parts list for that motor... 馃憤
I guess he was using aftermarket rods and special pistonies too. Wonder what the heads looked like?
Menangler 路
1303Steve wrote:Hi
You can buy 200mm flywheels to bolt straight onto the T4/WBX crank now from CIP or Jake Raby.
I think the WBX was redlined at 6250 rpm from the factory.
I was going to dowel in between the flywheel bolts if I had any issues on my WBX.
Steve
Rod Penrose also has them in stock, stock weight and lights ones, that is where I bought mine from.
I am running everything heavy this time, I will see if it helps off the line with my tall 1st gear.
I am thinking a bit of inertia will help, as I usually leave the line at around 5000 rpm and shift at 7000, once it is up around those revs it stays there and it's just a quick flat change up to the next gear.
It would be different with a roundy roundy track car, where you need the reciprocating lightness for quick power on and off in corners.
dangerous 路
pete wood wrote:
dangerous wrote:I did a counterweighted WBX crank and the 5 dowel set up for a racer some years ago.
It held up very well without a wedge mate but he used some pretty spiffy bolts I recall.
I read in europe a fellow using a stock 69 crank and light parts
expects reasonable life from his 1603cc engine
using as much as 9000. (n/a ran 11.58!!)
Although the short stroke and light reciprocating parts helps a hell of a lot.
love to see the parts list for that motor... 馃憤
I guess he was using aftermarket rods and special pistonies too. Wonder what the heads looked like?