Mr Pat, Thank you for the idea. That's is so simple, it's ingenious! I was thinking the home-made solution would be to buy some round stock but a flat sheet and a hole saw would be the way to go. Is aluminum sheet too soft a material for valve shims or would you use steel?
Does anyone have a good online source for thick shims? These springs have a rather small diameter (~1") so I would think a source would need to have a large selection to stock such a small diameter shim.
I've never seen a shim that large. Can you shim 2/10"? I know there are stackable shims but, good gravey, you're talking a huge numbers of stackable shims to get to 2/10".
Dear Gentlemen,
Every now again I get a hare-brained idea that I need to run by the Eng-Tips wizards. There is no other website that compares to this one when a fellow needs a correct answer. Here is my latest hare-brained notion...
I have a new set of stainless steel forged valves that go in...
This has nothing to do with valve clearances. I'm just trying to double check that the valves are seating.
Rod, thanks for the tip. I never considered a vacuum cleaner and stethoscope.
I'm hot-rodding a Toyota 4AGZE, which is a 1600cc 4-valve supercharged motor. I would like to test the exhaust sealing ability of the valves by heating a closed valve with a propane torch (and then pressurizing the valve from the back side). Can someone give me a ball-park figure for the...
RossABQ: You definitely picked up some errant information there. The 4.6 dohc modular came out circa 1994 and some of those real early motors did not use beehives (I know because I've disassembled several in a junk yard) but, for the most part, all dohc modulars have OEM ovate beehive springs...
Today I was lining up a collection of ovate beehive valve springs (because I have that kind of time) from a Ford 4.6 DOHC 4-valve motor. While doing this, I noticed that roughly half the springs were wound to the right and half wound to the left. Is there any good reason why Ford would specify...
I have a hard time believing the outside dimensions on these bearings my damn self. I have these bearings in my hand and I keep measuring them in disbelief. The rear set of bearings is even more weird... they are 46mm O.D!
Regarding the shell idea to get a smaller bearing installed, I...
Dear Gentlemen,
I've been rebuilding the supercharger from 1989 Toyota MR2. Here in the States, the car is officially an antique. The supercharger is an OEM factory (Toyota SC12), self contained unit which has a pair of flat roots-type paddles. I am having trouble finding replacements for the...
Thanks to all who took the time to contribute to this discussion. I've always found the discussions here to be insightful and, more importantly, consistently accurate. I believe this forum is wonderfully unique in that respect. I am forever grateful to those of you who so generously give your...
Mr. Locock: No, I can see no reason why it would not run. Even with a different bore, stroke and displacement... I would still expect it to run. However, is there any reason to suspect it might not run well? WC,Palm Springs
Okay, that makes sense. It sounds as though the major stumbling blocks would be the cam sensor and the crank sensor. I would think the rest of the stuff could easily be swapped out. To get a Ford computer to run a Northstar motor you would use the Ford mass air, the Ford O2 sensors, Ford...
