Don Terrill’s Speed-Talk

I have a Fischer Porter Glass tube fuel flow meter. Model #10A4555E, Serial #90W212363, max volume 116 PPH. I used this on my Stuska Dyno build for measuring BSFC for motorcycle testing. Probably not high enough rate for car engines, but perfect for small engines and all motorcycles. $50 plus shippi...

This is for any Harley Twin Cam experts... I was asked to look at a Harley Twin Cam that after getting a cam swap is not getting any oil to the top end. According to the mechanic working on it, the lifters and pushrods and cams were changed to S+S items but everything else in the cam chest and top e...

Joe-71

Just out of curiosity, what was the gap on the second ring and the top oil ring rail? Bore?

I've been reading and watching a fair amount of videos lately about cylinder honing and cylinder finish. When I was learning to hone cylinders 40 years ago, I was taught to rough hone with 150 grt to within .003" of final size then use a 220 grt to within .001" of final size and finish the...

PackardV8

Thanks!

PackardV8

I'm in Roseville CA. Shop info?

I'm looking for a shop that can do industrial chrome plating on a couple of pivot shafts. The shafts are roughly 1.25" OD and 14" long.
I've been using 4130 unplated but am not getting the wear resistance I need.

I am currently putting together a couple of motorcycle single cylinder road race engines and have been asked by one of the owners about having the cast iron liner plated in Nikasil. I've read that Nikasil has some favorable properties when it comes to oil retention on a hot cylinder wall, and that i...

I am working on several motorcycle engines in preperation for next seasons road races and have been asked by several of the engine owners if micro polishing the transmission gears and primary drive gears would be worthwhile as far as picking up a few HP. Also wondering about friction reduction coati...

Guys,
I did not see the post by David Redszus prior to my last posting. If I had, I probably wouldn't have bothered since David did a much better
job at tackling the topic than I could ever have. Anyway, still very interested in hearing anything any of you have to say on the subject.

Cam King, I think this could only be correct if the cams were installed in engines with identical bore and stroke and chamber volumes and the cams had identical intake valve closing points. Change any of these parameters in either one of the engines and I believe the "dynamic" cr would mea...

When discussing compression ratios the topic of static ratios vs corrected (dynamic) ratios invariably gets mentioned and there seem to be some differences of opinion on which is the more important and whether either one can tell much about the actual pressures within the cylinder due to the changin...

I saw a couple of articles recently that talked about carbon fiber connecting rods. I know this has cropped up now and then but nothing ever seeems to come of it. Do any of you know if composite rods are being developed or in actual use? It seems to me that on a two piece rod, the bolt hole area wou...

3 valve heads have actually been used in a few motorcycle engines already. The Honda 400 Hawk made in the 70's and early 80's used a two intake valve-one exhaust valve configuration. I believe that the Ducati ST3 also used a three valve scheme, hence the ST(3) moniker. I've been told that Ford also ...

Nicholas, Your post really caught my eye since I have been campaigning two Aermacchi 350 vintage racer in AHRMA for over a decade (as builder tuner not rider). I also have a lot of Harley Davidson experience going back to the Shovel heads and up to the new M8. Here's my 2 cents worth... First off, y...