1980 Ski Nautique Total Restoration

Engine and Velvet Drive transmission aligned to prop shaft tonight to DOBA, calibrated by NASA rocket scientists one nanosecond before the connection was made while using a Craftsman model 1019 Laboratory Edition Signature Series torque wrench. The kind used by Cal Tech High Energy physicists, That will be close enough. Thanks, Pete for the alignment video and Eric for the pictorial step by step.

I decided to machine rather than shim because by lightening up the flywheel I would gain 50hp.

TRBenj,
Yes, it is a Sachs/Alta 3leg damper I bought from Ebasic power. Here is the link:
ALTDA-106A

I almost convinced myself to install it without modification to the flywheel or to shim. Just couldn't do it.

To all interested.
While I was trial fitting the damper (flexplate) to the flywheel a while back I realized the damper was not flat against the flywheel, which was frustrating. I forgot that the problem existed until last evening when I was getting it ready to reinstall. Opps!

Upon doing a better search on CCF I found this thread which confirmed I am not crazy: Flex Plate Compatability Thread

My damper would not seat because the rivet location/diameter exceeded the cavity diameter in the flywheel, and mounting it would distort the damper. Two options exist, 1-shim the flexplate with hardened shims of flat washers to allow the plate to be "off-contact" with the flywheel to a height equal or slightly greater than the rivets, 2-grind the cavity to a larger diameter so the cavity will swallow the hub of the damper. I dropped it off at the machine shop just now to get it machined. I do not think simply bolting it down and distorting the plate is an acceptable option. Shimming may be okay, but it seems that the added stability of surface to surface contact between the plate and the flywheel does provide some benefit, although perhaps minimal.   

Thankful for those who have documented this problem here to make it easier for us going through this now. Still hoping to reassemble and install in the SN this Saturday.

Looking great!

10% of total trailered weight

Looks great!

Arklie,
When the engine was in the boat, how much weight was on the trailer tongue?

The boat sure is coming along great. I'm sure the big day will be when it hits the water.

Repatriated the SN with her trailer today. Glad that's over and she is no longer incarcerated in the garage. Freedom! I was a bit more nervous jacking her up off the stands than I was way back then placing her on the stands. I was thinking about how much more work would need to be undertaken if i were to drop her on the concrete.



Really great getting the garage opened up and getting somewhat reorganized. Probably will need to wait until next weekend to reinstall the engine and transmission. Upholstery is supposed to be ready this week as well.

Where did you get the carpet ? That's exactly what I need . Real nice job you did there.

Pretty much finished the carpet tonight, just need to figure out the best way to install the panels that attach to the sides of the airbox. I made new panels out of composite and wrapped them with carpet tonight and will get them installed tomorrow. I will probably try the velcro method that someone suggested first since there is no downside to trying it. Not interested in penetrating the fiberglass with fasteners. So if the Velcro doesn't work i may try using some 4200 fast cure blobs.






Tomorrow i will attempt placing the beast back on the trailer without dropping it on the garage floor. Hoping for success. Once i do that the boat will no longer fit in the garage since it has the boarding platform installed now. So, its go or blow.

that red looks great!

just one of the reports I've seen over the years on this site.

Originally posted by Waterdog Waterdog wrote:

E spark (mallory) seems to be the best. Thats the one i use (86 2001).
My brothers (Pertronix) was bad out of the box.(84 2001)
When you mount the new coil try not to "lay in down" 30* angle or better.

Enough of the points rah rah already. Hear you loud and clear. I must have missed all these documented Pertonix failures?

There seems to be a high failure rate lately,I wonder if they have changed their electronics supplier