quote Originally posted by WAWUZAT: Some have said the only differences between the 275HP VIN-Y (LD8 engine) and the 300HP VIN-9 (L37 engine) are the camshafts and the valve springs. I posted a photo earlier that shows the physical difference between the camshafts. Just for kicks, I compared the valve springs today. The VIN-Y springs are wound from 0.125" diameter wire, and have six-and-a-half 360-degree coils. The VIN-9 springs are made from 0.130" diameter wire, and have only six 360-degree coils.

Torsion increases with the 4th exponential to radius, and 6 turns makes for more torsion per displacement, which makes a higher spring constant.

Great build thread.

[This message has been edited by AP2k (edited 05-31-2007).]

quote Originally posted by AP2k: Torsion increases with the 4th exponential to radius, and 6 turns makes for more torsion per displacement, which makes a higher spring constant.

True. Some folks cannot understand that having fewer coils ... also as in suspension coil springs ... makes for a higher "spring rate."

quote Originally posted by AP2k: Great build thread.

Thanks! For a while there, I was starting to think nobody was looking at this.

Picked up my heads & valves today from Dunkum's Machine Shop. I'm now ready to start smoothing the surfaces inside my intake & exhaust ports. But before I do that, I need to pull the 2.8 V6 & transaxle out of the kit car, and have it ready for another Pennock's poster to come get it. I may not be posting many photos within the next week ... maybe just before & after shots.

[This message has been edited by WAWUZAT (edited 05-31-2007).]

quote Originally posted by Nashco: Rest assured that you've got an audience, most of us (myself included) just don't want to interrupt your flow of good documentation with our own chit chat. Bryce 88 GT

Thanks, Bryce !

Yesterday's weather was a lot better than today's forecast (remnants of tropical storm Barry blowing through today), so I spent a good part of yesterday outdoors. I accomplished nothing on the N* because I need to yank the 2.8L V6 out of the GT40. Got 'er up on stands, drained fluids, and started unhooking items from the engine ...


Today, I installed new primary timing gears, chain, guide block, tensioner, and a new Melling oil pump. In another post last year, I mentioned how I won an eBay auction for $1,100 worth of N* rebuild parts ... bearings, rings, gasket sets, timing gears, chains, guides, tensioners and oil pump. Though I was the high bidder, I had not met the seller's reserve price. I was totally shocked (and PLEASED) when the seller sent me a 2nd-chance offer the next day, and sold me all those parts for less than what the FelPro gaskets sets alone would've cost me.


EDIT TO ADD ... A little prevention can go a long way. I failed to mention above that there are a few small openings that could allow unwanted parts to drop down inside the bottom-end. This is not a good thing unless you actually enjoy fishing parts out of the Twilight Zone, or re-assembling parts over and over again gives you a thrill. A stuffed rag, or some tape as shown below, can prevent major aggravation

[This message has been edited by WAWUZAT (edited 06-09-2007).]