Recent content by Jack Gifford

Thanks for the help!

I need the definition of flare angles of so-called 37 degree AN fittings. I believe that the male/female angles are not identical, but can't find the actual angles.

For about 12 seasons I used steel sleeves in the aluminum V8 block of my blown alcohol minipuller (370 c.i., 900 HP). Machined from seamless DOM tubing, but I don't recall the alloy. There wasn't anything unusual about the ring sets- I merely told the ring manufacturer about the steel sleeves.

Thanks. I apologize for not reading the whole thread.

If the ring retains "Belleville" functionality, is there no concern for leakage during the intake stroke? Or would this be considered a "benefit"- built in positive crankcase ventilation...

A number of times I changed press-fit liners in the aluminum block of my blown hemi tractor-pull engine (M/T Pontiac hemi heads), no problem (~.004" interference at room temperature). Sleeves are machined from DOM steel tubing, retained by flanges sitting in deck counterbores. Flanges are...

Didn't I read that Detroit is at least to the prototype stage with no-starter-motor vehicles? And, yes, Model-T Fords of the brass era would often start without cranking. A late friend demonstrated to me his T starting 17 times before it failed.

Thanks chez. That's interesting about LNS of chains.

If automotive journalism can be believed, 100 hour full-power engine tests date back awhile. Supposedly- Bunkie Knudsen insisted on changing to forged crankshafts in the 1958 Pontiac V8 engines after cracks occurred in cast cranks during such tests.

guru- you are right, no end thrust on idler. I apologize.

Wrong. Idler gear will have twice the end thrust of the crank gear or cam gear.

I'm not getting needed answers nor have I found a gear company offering the LNS grinding, so I'll simply duplicate the gearset with helical gears- and somehow deal with end-thrust of the idler gear. Thanks for listening.

Mike- No interest in patents or commercial value. Merely entertainment for my retirement years. Rather than put up with the gear whine, I put a normal timing drive in the engine and it's serving me well. But I'd really like to someday use the variable-cam-phasing on the street. While testing it...

I asked about hydraulic gear pair loading because it could be done very compactly in my application, and space is very limited. I would substitute a gear pair for the idler gear of my cam drive which is only 1.970" OD, with no available space around it. Engine oil pressure would be routed...

I suppose you could say that my question about durability of LNS has already been answered by Opel's apparent satisfaction with it. I'll see if I can talk with Reishauer about it. Does the scissor-gear concept always imply spring loading of the paired gears to each other? Would hydraulic...