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Search found 675 matches

by MotionMachine
Tue Sep 15, 2020 7:32 pm
Forum: Engine Tech
Topic: rent/borrow 401 AMC torque plate?
Replies: 5
Views: 429

Re: rent/borrow 401 AMC torque plate?

Jeff Lee wrote: Mon Sep 14, 2020 8:22 pm CCA Racing Products has AMC Torque Plates and they offer them for sale or rent.
You are right, CCA had one in their rental collection.
by MotionMachine
Mon Sep 14, 2020 8:14 am
Forum: Engine Tech
Topic: rent/borrow 401 AMC torque plate?
Replies: 5
Views: 429

rent/borrow 401 AMC torque plate?

Does anyone have a 401 torque plate that I can rent/borrow?
by MotionMachine
Tue Aug 25, 2020 12:28 pm
Forum: Engine Tech
Topic: Sleeve Flange To Counterbore Clearance?
Replies: 4
Views: 287

Re: Sleeve Flange To Counterbore Clearance?

Some. I give them .004" total (.002" per side).
by MotionMachine
Tue Jul 28, 2020 7:58 am
Forum: Vintage/Classic/Historical Engine Tech
Topic: 1954 Nash Dual Jetfire Le Mans
Replies: 4
Views: 236

Re: 1954 Nash Dual Jetfire Le Mans

Mentioning those old motor manuals your F-I-L has jogged my memory. I have a box of old manuals I got from my Uncle Roy I had forgotten about. Turns out the earliest one is 1953, covering everything from 1935. The Le Mans model is listed in there too so looks like I found what I needed. The aluminum...
by MotionMachine
Mon Jul 27, 2020 5:58 pm
Forum: Vintage/Classic/Historical Engine Tech
Topic: 1954 Nash Dual Jetfire Le Mans
Replies: 4
Views: 236

1954 Nash Dual Jetfire Le Mans

I'm doing the machine work on this engine. This model came with the same aluminum head used on the Nash Healey, which makes it on the rare side apparently. Someone in the past had bored it .125" over and used the oe head gasket, so it had burned it in many places. The engine was severely stuck, head...
by MotionMachine
Wed Jul 22, 2020 8:00 am
Forum: Vintage/Classic/Historical Engine Tech
Topic: C.I.H. engine
Replies: 40
Views: 1710

Re: C.I.H. engine

By coincidence, I have a 2.0 Opel in the CNC right now for a long time GT road racer friend of mine. I did not realize that the bores are offset in these blocks by 1.5mm, towards the drivers side.
by MotionMachine
Mon Jul 13, 2020 3:32 pm
Forum: Engine Tech
Topic: recognizing alusil
Replies: 21
Views: 990

Re: recognizing alusil

The nikasil sleeves that I hone to size (approx .004" stock removal) requires an Ra of no greater than .3um. These are Mahle specs. But I check all 7 parameters when I do them initially, Ra is just one. The Ra is about half that number after use, the flex hone increases both the valley and peak numb...
by MotionMachine
Mon Jul 13, 2020 7:42 am
Forum: Engine Tech
Topic: recognizing alusil
Replies: 21
Views: 990

Re: recognizing alusil

Alusil is not applied, the parent material is a high silicon content aluminum. It's a special process to hone them, I did a Youtube video showing how I do BMW V8's, using a profilometer to ensure that each step arrives at the right Ra value before moving on to the next step. I'll try to attach the ...
by MotionMachine
Sun Jul 12, 2020 9:54 am
Forum: Engine Tech
Topic: Audi V10 damaged bore
Replies: 17
Views: 1022

Re: Audi V10 damaged bore

I mistakenly say nikasil instead of alusil about a minute in so ignore that. I've never done an Audi but I would imagine that it's the same alusil as BMW.





https://www.youtube.com/watch?v=J43RkJTHdCE
by MotionMachine
Sat Jul 04, 2020 7:40 am
Forum: Engine Tech
Topic: recognizing alusil
Replies: 21
Views: 990

Re: recognizing alusil

If you are just doing a freshen on those liners, BRM makes flex hones specifically for nikasil. I have one app that I use one on and it does give the correct finish.
by MotionMachine
Wed Jul 01, 2020 7:54 pm
Forum: Engine Tech
Topic: recognizing alusil
Replies: 21
Views: 990

Re: recognizing alusil

Alusil is not applied, the parent material is a high silicon content aluminum. It's a special process to hone them, I did a Youtube video showing how I do BMW V8's, using a profilometer to ensure that each step arrives at the right Ra value before moving on to the next step. I'll try to attach the v...
by MotionMachine
Sat Jun 27, 2020 1:58 pm
Forum: Engine Tech
Topic: Valve guide interference fit: Bronze vs cast iron guide?
Replies: 27
Views: 4059

Re: Valve guide interference fit: Bronze vs cast iron guide?

IMO the only reamers that work on bronze guides are the AV&V reamers. I bought one for 6mm and it works awesome. It was almost $200 but worth every penny for the job I used it on. I've bought the Goodson ones, Atlas, Kline, whoever else over the years, absolutely no comparison. You will regret tryin...
by MotionMachine
Fri Jun 26, 2020 9:27 pm
Forum: Engine Tech
Topic: Valve guide interference fit: Bronze vs cast iron guide?
Replies: 27
Views: 4059

Re: Valve guide interference fit: Bronze vs cast iron guide?

Ream it if you feel you must, but then have it properly sized by a shop that has a rigid guide hone.
by MotionMachine
Tue Jun 16, 2020 8:58 am
Forum: Engine Tech
Topic: Valve seat rim sitting proud in chamber - Detonation risk?
Replies: 16
Views: 797

Re: Valve seat rim sitting proud in chamber - Detonation risk?

Where would I get the seats - any idea? My machinist said he didn't think his regular source would have the size. If your machinist can't modify an existing seat to fit, you need a different machinist. If it makes you feel any better, every Alfa head I do has protruding seats, intakes worse than ex...
by MotionMachine
Mon Apr 27, 2020 8:16 am
Forum: Engine Tech
Topic: Checking a long block without disassembly?
Replies: 6
Views: 480

Re: Checking a long block without disassembly?

The deal breaker is the mainline. The 2.0 did not suffer the cylinder cracking issue that the 2.5's do but they will pound out the mainline if used hard. Unless you can get a guarantee of good hot oil pressure, beware.