RichS's ED gear (thread reply not working)
Thread Starter
Safety Car
Joined: Sep 2002
Posts: 4,030
Likes: 6
From: Maryland
RichS's ED gear (thread reply not working)
Rich,
Thanks for posting your picture. For whatever reason the reply is not working right now.
For the record, that is exactly how mine looked except the wear went further with mine since I had 15000 mi and so many teeth were totally gone as they were "machined" away as you can see is already happening with your teeth in the picture.
It is also how the other pictures posted by other forum members looked. And they did NOT road race. One had 1500mi.
One issue with the ED gear for sure is improper hardness. The gear teeth are soft (I measured RC 28, 130,000 psi tensile strength) compared to the small wp gear (RC 42 if I recall, 195,000 psi tensile strength)--I had these measured in a lab. The LT1 set has both gears matched at RC42 and no wear results.
Your options: 1)as said, the E pump route will get you there and I chose that. But you will run hotter on the road course (admits Meziere-20-30 degrees) and that's a big negative. Talk to Jim Mason here, GS007, he runs his GS with the Epump on the road course but he has some serious custom oil cooling system.
2) Your ORIGINAL stock LT4 gears, if you have them. If they had no wear after 20,000 mi and some road course use, they might be good.
Question though: HOW IS YOUR WATERPUMP? Can you turn the shaft by hand or is it hard to turn? Mine was hard to turn, leading me to think that this is also, in part, a GM waterpump issue, which would explain why some get it and others don't. Then again, maybe everybody is getting it and hard use simply accelerates the process. Mine went 15,000 mi but I had the only 2 road course events in the last 3,000 mi of that.
Thanks for posting your picture. For whatever reason the reply is not working right now.
For the record, that is exactly how mine looked except the wear went further with mine since I had 15000 mi and so many teeth were totally gone as they were "machined" away as you can see is already happening with your teeth in the picture.
It is also how the other pictures posted by other forum members looked. And they did NOT road race. One had 1500mi.
One issue with the ED gear for sure is improper hardness. The gear teeth are soft (I measured RC 28, 130,000 psi tensile strength) compared to the small wp gear (RC 42 if I recall, 195,000 psi tensile strength)--I had these measured in a lab. The LT1 set has both gears matched at RC42 and no wear results.
Your options: 1)as said, the E pump route will get you there and I chose that. But you will run hotter on the road course (admits Meziere-20-30 degrees) and that's a big negative. Talk to Jim Mason here, GS007, he runs his GS with the Epump on the road course but he has some serious custom oil cooling system.
2) Your ORIGINAL stock LT4 gears, if you have them. If they had no wear after 20,000 mi and some road course use, they might be good.
Question though: HOW IS YOUR WATERPUMP? Can you turn the shaft by hand or is it hard to turn? Mine was hard to turn, leading me to think that this is also, in part, a GM waterpump issue, which would explain why some get it and others don't. Then again, maybe everybody is getting it and hard use simply accelerates the process. Mine went 15,000 mi but I had the only 2 road course events in the last 3,000 mi of that.
Last edited by sothpaw2; Jun 2, 2006 at 09:19 AM.
Le Mans Master
Joined: Jan 2002
Posts: 9,036
Likes: 13
From: Edmonton AB
Originally Posted by sothpaw2
For whatever reason the reply is not working right now.
If you just see a pink section with nowhere to enter text,
this is a result of the large picture above. It is forcing
the text box over to the right.
If I've described what you see, then use the scroll bar at the
bottom of the frame to slide the text box into view.
HTH
.
