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Search found 492 matches

by hoodeng
Sat Jan 23, 2021 7:49 pm
Forum: Engine Tech
Topic: Camshaft retard
Replies: 28
Views: 4491

Re: Camshaft retard

Ah yes CamKing,,one test is worth a thousand opinions!

The burette, dial indicator, measuring tools, degree wheel and calculator are the elementary tools of discovery!

Cheers.
by hoodeng
Wed Jan 20, 2021 5:53 pm
Forum: Offtopic Forum
Topic: Good book
Replies: 11
Views: 358

Re: Good book

Thanks for that Kevin, some good ones to be read in there, nearly time to load up the Kindle again. The one 'The Alchemist' reminds me of a book about Isaac Newton. I have nearly finished 'The Fountainhead',, finished 'Atlas Shrugged' and 'We the living',, you would have to be a big fan of the autho...
by hoodeng
Sun Jan 17, 2021 3:00 am
Forum: Engine Tech
Topic: Keeping Things Clean
Replies: 5
Views: 747

Re: Keeping Things Clean

Mt, you are right, if it was only dusted,wiped down and some brake clean, dried and lubed, for sure, no problem.

If there has been contaminated solvent blown down into the ring pack, that's a different thing altogether. That's when i would pull it apart.

Cheers.
by hoodeng
Fri Jan 15, 2021 6:51 pm
Forum: Engine Tech
Topic: polishing a crank
Replies: 16
Views: 1078

Re: polishing a crank

As pointed out, backyard [shade-tree] methods work for those that see it fit for purpose, I'll go with technology every time, and yes i know, it always costs me money. Something not pointed out when using abrasive tapes and cloths is its preparation for the job at hand. We were taught as apprentices...
by hoodeng
Thu Jan 14, 2021 10:13 pm
Forum: Engine Tech
Topic: Keeping Things Clean
Replies: 5
Views: 747

Re: Keeping Things Clean

As it is only a short block, and you have identified dust etc sitting on it already it would probably be easier just to pull it apart and clean it properly. Trying to wash down the sides of pistons with solvent etc will wash any oil away from that area, you may be able to re oil both ends of the bor...
by hoodeng
Wed Jan 13, 2021 6:15 pm
Forum: Engine Tech
Topic: polishing a crank
Replies: 16
Views: 1078

Re: polishing a crank

What we need to get back to is how we are perceiving surface finish. A couple of comments are based around ‘visual inspection’ as in ‘bright surface finish’, ‘grey/dull surface finish’ being the decider of what we have as a surface finish. Optic and tactile surface finish tests have been around for ...
by hoodeng
Tue Jan 12, 2021 7:34 pm
Forum: Engine Tech
Topic: polishing a crank
Replies: 16
Views: 1078

Re: polishing a crank

In my apprenticeship i worked on RR C range diesels, these had the only post machining and linish cranks that we did. Post finishing was done with a leather strop not dissimilar to a barbers strop, journals were polished to mirror finish this way. Incidentally, i have never know an engine to have so...
by hoodeng
Sun Jan 10, 2021 12:34 am
Forum: Vintage/Classic/Historical Engine Tech
Topic: Lead used to lube valve stems?
Replies: 16
Views: 874

Re: Lead used to lube valve stems?

These are my pipes after a decent run, probably 300km no stops and at highway speed, total that weekend 750km or so all highway speed. No lead or additives, 98 octane fuel [your 95], no residue. Pipes look like this after every long run.

Cheers.
by hoodeng
Sat Jan 09, 2021 9:50 pm
Forum: Vintage/Classic/Historical Engine Tech
Topic: Lead used to lube valve stems?
Replies: 16
Views: 874

Re: Lead used to lube valve stems?

Dave is on the money with the application of TEL. Guide clearances over the years have not necessarily followed fuel composition, i will quote inlet valves only in the following. Harley Shovel engines started out with .002"-.004" without seals up till 1980 in 81 they went down to .0009" to .0026" an...
by hoodeng
Wed Jan 06, 2021 7:51 pm
Forum: Engine Tech
Topic: Protecting valve seats when porting.
Replies: 34
Views: 2062

Re: Protecting valve seats when porting.

Hello Mag, i have included a couple of photos, one is of the flow bench i don't have and have not had for twenty five years,[had a 110 prior to that for a number of years] the head on it is the one i have no idea about [yes every head done here is tested] You have made a lot of presumptions from a c...
by hoodeng
Wed Jan 06, 2021 12:08 am
Forum: Engine Tech
Topic: Protecting valve seats when porting.
Replies: 34
Views: 2062

Re: Protecting valve seats when porting.

One inlet and one exhaust port after 40 minutes, basic shapes and alignments done. There is a lot of metal to come out. Hour and three quarters/two hours will see a pair pretty much ready for finishing. I can not imagine myself doing this balancing on one foot and one regulating on a pedal! I suppos...
by hoodeng
Tue Jan 05, 2021 11:50 pm
Forum: Engine Tech
Topic: Protecting valve seats when porting.
Replies: 34
Views: 2062

Re: Protecting valve seats when porting.

Port before.
by hoodeng
Mon Jan 04, 2021 2:28 am
Forum: Engine Tech
Topic: Piston Pin Clips
Replies: 14
Views: 560

Re: Piston Pin Clips

i did try adding photos of two installation tools but my login keeps dropping out.
by hoodeng
Mon Jan 04, 2021 2:26 am
Forum: Engine Tech
Topic: Piston Pin Clips
Replies: 14
Views: 560

Re: Piston Pin Clips

Look in the retainer clip groove, if it has a radius it uses round wire clips, if it is squared it uses circlips or spiralocks. Also look at the end of the pin, if it has a radius on the end this goes with round wire clips, if it has a small radius or edge break on the end this goes with square fini...
by hoodeng
Sat Jan 02, 2021 2:12 am
Forum: Engine Tech
Topic: Piston to Head Clearance Minimum
Replies: 23
Views: 897

Re: Piston to Head Clearance Minimum

As Walter has said, it depends. All engines are not the same, .025" fine in some and not so good in others. In what i do we can run as low as .030", but when i get shops to check squish before they send me their cylinders i get them to include the leads with the cylinders, you tell them [depending o...