I got an SRR 11lb chromoly flywheel for my D16Y8 a couple months back off eBay for $200. It seemed like a good buy at the time, and when it came in, it looked great. However, when I got around to installing it a couple weeks ago along with my clutch, I found that the clutch bolt hole spacing on the flywheel doesn't match my presure plate. So I thought I got the wrong p/p, but I verified it with my friend's Z6 longblock, and it went right on to his stock flywheel. The SRR's clutch bolt pattern is at a smaller radius than stock. My question is, was the SRR D16 flywheel not designed to work with an OEM-style p/p? If not, what're you supposed to use? One of their p/p's? That sounds kind of odd. I've tried contacting SRR's US offices with no luck, and the guy on eBay whom I got it from pretty much told me "tough luck." I also can't do anything about it thru my credit card company or PayPal, since I got it back in September and I only found out it wouldn't work a couple weeks ago. So does anyone know what the deal is with SRR's D16 flywheels? Would it be possible to have a machine shop redrill and retap new clutch bolt holes and relocate the dowel pins? I'd assume they'd have to rebalance it too, but is that even an option? I'm a (worse than)broke student who is unemployed, so I can't really afford $225-250 for another flywheel, or I'd get one of the ACT streetlight ones. Any help is greatly appreciated. Oh, and this is what the flywheel looks like:

That's the backside, but you can still see how far in the clutch bolt holes are. They're supposed to be about 1/4" or so closer to the ring gear(further out).

If you ever come across any auctions hosted by "dohccivicna1250", do your homework and ask questions before you bid, because if they're are problems after the purchase, he's absolutely no help. He has a 5000+ feedback profile, but he also has about 240 negatives that never seemed to be resolved.

 

I had the same problem installing my act p/p with my act streetlight 9lb fly. Come to find out, lol, I had to turn the p/p around a couple times on the fly to align the holes. The p/p has to sit a certain way on the fly. I hope that helps, least it did for me and I almost sent it back to ACT but at the last second a buddy of mine fooled around with it and it dropped right on.

 

By the way inspyral. Do you have AIM or MSN messanger? If so could you pm me? I would like to speak with you about something but not over the board.

 

Yeah, I figured I had it rotated incorrectly at first, but after about 20 mins of turning it this way and that, it still wouldn't go on. It's not a matter of lining up the holes and dowels, the hole/dowel pattern is just simply drilled on a smaller radius than stock. If you lay the SRR flywheel next to a stock flywheel, it's pretty easy to see that the SRR's holes are on a radius that's about 1/4" smaller than the stock one.

 

why not take it to a good machine shop and have them re-drill and tap to fit your pressure plate?

 

That's one of the options I was considering. Would it be possible to redrill the holes and relocate the dowel pins while still maintaining a decent level of reliability?

 

Yeah, a good machine shop should be able to split the difference between the existing holes without weakening the outer edge any. Is it possible you got a one-off flywheel that they realized later was not right?

 

That sounds possible. I was thinking maybe they designed their flywheels to work with a smaller p/p, but that doesn't sound right. I've found pics of someone else's SRR flywheel, and it looks like it has the correct D16 p/p bolt pattern. When you look at mine next to it, you can see the difference quite clearly:


Notice how the holes on mine are almost right on that inside edge, whereas yous are about 1/8-1/4" further out. So it looks like the one I got is some kind of one-off, or they just setup their machinery wrong that day and it's just defective
I guess I'll have to look for a machine shop.