Hi folks ,
for the people that have them , what is the general opinion of the crankshaft . Looks top notch .
I put one in the Fordor last fall. Top notch product. I was after durability, and had hoped for a smoother engine as a side effect. It is not much smoother, if any, than the stock crank. I suppose my stock iron pistons are to blame for that. I could not bring myself to swap for aluminum pistons, as I had brand new Mongomery Wards rings for the stock ones.
I have a SCAT counter-balanced crank in my '26 Touring. Yes, it does have aluminum pistons along with a Stipe 280 cam and Z head. All installed after a complete high-quality rebuild. It runs incredibly smooth at all rpm's. The complete rebuild (engine/trans) came to about $6300. Not cheap, but I wanted an engine that would push my car reliably throughout my lifetime and hopefully a couple of other's as well. I look on it as my contribution to living history. And yes, I did keep all the receipts as well as pics to prove it!
Kevin, just curious how much if any does you T leak oil/grease after your rebuild? Thanks Dave Tipton
Dave, Virtually none. I might get a drip or two off of the transmission cover thanks to paper gaskets on the screen. I think I can stop that by making rubber gaskets if I an find a sheet of rubber gasket material large enough to cut them. After the break in period, I currently run Amsoil 10W-40 Premium high zinc fully synthetic oil and change it once a season. I don't drive a huge amount of miles, so it's not an issue like it would be if I put a load of miles on it like some guys do. In that case it would be changed more often.
The front horseshoe and bolt have to be filed down a bit for the counterweight on a Scat crank.
I had one put in my speedster. I had a bad front main, so while the motor was out having new babbitt, I decided to put a Scat in at the same time. (Looking to the day when it will have a Fronty also)
I took it out for a test run about a month ago. Got it going as fast as I thought I normally would dare, judging speed only by engine sound & feel. When I felt that I must be doing around 45 or so, I finally glanced down at the speedometer to see that I was doing 60! I've got to believe it was the decreased vibration of the Scat that "fooled" me into thinking I must be going slower than I really was. BTW, not looking to do 60 again.
Larry, on the only Scat crank I have fitted so far, it was the rear horse shoe and bolt which needed attention. Should I also be checking the front when installing the next one in my D & F roadster?
Allan from down under.
When I installed the Scat crankshaft in mine last August, I had also re sleeved the cylinders with new pistons and rings, and all new babbit. I also replaced the camshaft and bearings and the timing gears. The engine was quite tight and I could turn it over with a large screwdriver through the hole in the front of the crankshaft. Then I put on the crankcase with the inspection plate already in place. I pulled the car with a rope to get it started. We have a gravel road and the wheels skidded over the road. Then I used the starter while it was being pulled in high gear and it started. I drove it back to the house, about 500 feet and ran it until it warmed up good. Then shut it off. From then on it will start just fine with the starter or by crank.
Perhaps, the reason it skidded was the crankshaft hitting the horseshoe? If so, it must have worn off in a few seconds when the engine started, because I haven't had any problems since then!
It usually hits by so much that your engine never would have started had it been an issue. I removed at least an 1/8" from mine.
Mine hit at the back horseshoe, no trouble at the front.
Norman, I built a mopar engine once that was very tight to start. I had to pull start it the first time, I later found I had the rings in to tight and after the first start it never had another problem. Just a couple of thousandths clearance can make a big difference.
When I fit the 4th main, I usually rotate the engine and check the fit in different positions. I was able to rotate the crankshaft with the large screwdriver to do that, so I think it was just the wheels slipping on the gravel.
Jerry, when I was young the skin on my face use to shake when I was going fast, it was shaking pretty good the day you gave me a ride! I believe we where doing 60+ easily the skin was shaking and the eyes where watering!!
Well Joe, I can't speak for you, but I can definitely say that that my skin shakes a lot more than it used to when I was young. (Sometimes when I'm standing still!)