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Gary, sometimes the quantity you have to order may be more than what you need. However, I have found that the quantity is the same price as just what you need at other places. So I go with the quantity and keep the extras until I need them in the future.
You need to see what all you need for the build and just call down there and see what they have and what they can get. ell them you are with Quality Lath and Plaster. That could make a difference in the price as well.
18% Ch-8%Ni encompasses the whole range of 300 series CRES.
316 has 2% moly and better resists chlorides.
300 series cannot be tempered, so it's either (B) work hardened or (A)annealed, and that is too gummy and likes to gall.
Look at an ISO 7092, 6mm small O.D. washer they are 6.4 id and under 11mm od.
So, are you saying 18-8 is too broad of a designation and, therefore, may not be suitable? But, am I worried about chlorides? However, I sure don't want it to gall in the aluminum head, although I can use anti-seize.
I found 18-8 at boltdepot.com, but not 316 in the sizes I need: 1/4-20 x 7/8" & 4 1/2". And, Amazon doesn't seem to come close.
Gary, sometimes the quantity you have to order may be more than what you need. However, I have found that the quantity is the same price as just what you need at other places. So I go with the quantity and keep the extras until I need them in the future.
You need to see what all you need for the build and just call down there and see what they have and what they can get. ell them you are with Quality Lath and Plaster. That could make a difference in the price as well.
So, are you saying 18-8 is too broad of a designation and, therefore, may not be suitable? But, am I worried about chlorides? However, I sure don't want it to gall in the aluminum head, although I can use anti-seize.
I found 18-8 at boltdepot.com, but not 316 in the sizes I need: 1/4-20 x 7/8" & 4 1/2". And, Amazon doesn't seem to come close.
18-8 is broad, and so means little.
It is like saying "low carbon steel".
You want (B) because you don't want to smear the inhex or threads.
(yes, I understand it's going into aluminum)
Always use nickel antiseize with stainless fasteners.
And -on that note- I'd expect the aluminum to be eaten alive before the fasteners were.
I learned enough to tell Dad why his 64 Buick's heads were leaking. Unbeknownst to him it had aluminum heads on a cast iron block and he was running straight water for a coolant. The aluminum was, truly, eaten alive.
Ok, I talked to Aaron at Eagle and ordered the stuff as shown below. It didn't make any price difference if it was QL&P or not, so I ordered it under my name. And, they will be in this time next week.
The washers are 18-8 as they can't get them in 316. I'm assuming that'll be ok as they won't have the galling problem threads would. And, they are #12's with a .265 ID, which will be a tight fit with the screws and will work well with recessing them. However, I may still have to put them on a mandrel and chuck them in the lathe to turn them down a bit as I'm not sure I can open the hole up to .500+ to take the full washer width.
The ball-hones came in today. I'm not impressed with the quality as the .500" one is a very loose fit in a 1/2" hole. But, I did get some done with it. Here's a shot of the oil filter boss before using the hone:
And here's one after:
Not a lot of difference, but some. And down where I really wanted to make a difference, where the bore from the oil filter's discharge hits the bore across the front of the block, I spent a lot of time and think I made a difference. But, you can't see it nor feel it, so I'll have to assume that I helped it, although something is getting smoothed up as the oil ran out black. In any event, I'll go back and spend more time on it tomorrow as I want to make that sharp corner more of a curve.
The pricing seemed like it was reasonable on the fasteners. That order would have been $275.00 from Fastenal.
The people at Eagle Bolt are nice people to deal with. I order stuff that costs $9.00 sometimes and they stay on the phone to work out the details or call me back promptly. I like their service so I do business there.
Yes, Aaron stayed on the phone for a long time on this call, and called me back yesterday to say they are in. I'll do business with them again. Thanks for the referral.
Hi Gary,
I think this was the thread for belt tensioners, I saw this earlier and thought you might find it interesting, it really shows the loads and amount of work the tensioner does. The 2-step limiter before launch really makes it freak out.
You should see what a Corvair fan belt does when you goose it. Withe early steel fans, you can actually see the belt get slack on the right side where the tensioner is. Clark's Corvair Parts sells an automatic tensioner to keep the belt on. Starting in 1964 the fan is magnesium and runs a deeper groove pulley and a keeper there is also a keeper on the tensioner. Matt's Corsa 140HP would generate a bit of slack in the belt as that engine would wind up pretty fast (sounded like a Porsche 911).
