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Search found 621 matches

by hoodeng
Tue Sep 21, 2021 2:41 am
Forum: Engine Tech
Topic: Porting With an Electric Die Grinder
Replies: 41
Views: 1623

Re: Porting With an Electric Die Grinder

MRS, it looks like it will take you a bit of time to wear out all those hand pieces before you even think about buying another one....But......Next time you do decide to get one, look at the Makita GDO810C as well, this has a reduction drive that i find suited to the alloy cut carbides. As for air c...
by hoodeng
Thu Sep 16, 2021 3:59 am
Forum: Engine Tech
Topic: Porting With an Electric Die Grinder
Replies: 41
Views: 1623

Re: Porting With an Electric Die Grinder

What model Makita were you using? The ones i quoted are 750W [1hp] these will wind ones wrist off if one is not careful. [i don't fully lock the chuck] Some guys on here have been hanging off a die grinder for a lot of years now and have probably tried different types out, they have got comfortable ...
by hoodeng
Wed Sep 15, 2021 2:28 am
Forum: Engine Tech
Topic: Porting With an Electric Die Grinder
Replies: 41
Views: 1623

Re: Porting With an Electric Die Grinder

This is for long shank carbides with vibration, if the thing is bent it is binned. I put the points in a three jaw chuck, in a bit over what they would be in the hand piece collets and then check for zero at the jaws, then put the dial indicator just behind the carbide head on the shank, then check ...
by hoodeng
Tue Sep 14, 2021 8:34 pm
Forum: Engine Tech
Topic: Temp Sensor in Dry Sump Return
Replies: 1
Views: 151

Re: Temp Sensor in Dry Sump Return

My understanding was that temp sensors are usually mounted in the reservoir somewhere near the pickup.

Cheers.
by hoodeng
Tue Sep 14, 2021 8:30 pm
Forum: Engine Tech
Topic: fuel return to the tank
Replies: 18
Views: 1076

Re: fuel return to the tank

Another way to route the bypass is to tee it into the feed line just before the pump and make the system looped. I have used this method on a LS bike that runs a low pressure pump and methanol, once the system is purged there is no aeration,,,good enough for a class record. Others might think otherw...
by hoodeng
Mon Sep 13, 2021 10:33 pm
Forum: Engine Tech
Topic: Porting With an Electric Die Grinder
Replies: 41
Views: 1623

Re: Porting With an Electric Die Grinder

Different stuff for different guys,,, some are on the grinder for a lot of hours and some are not, some have difficult stock to remove some don't. I pretty much only do alloy, four ports is the job run. I used air for years but the refrigerant effect on my hands got to be unsustainable.[not to menti...
by hoodeng
Mon Sep 13, 2021 10:07 pm
Forum: Engine Tech
Topic: fuel return to the tank
Replies: 18
Views: 1076

Re: fuel return to the tank

Chimp, you have just added another jet to the system. Return should be unrestricted in any form with carburetors. The only time i have heard of this working was in a Rolls Royce Merlin fitted with a Miss Shilling [Tilly]orifice. The only time we see jets in a return is in mechanical fuel injection. ...
by hoodeng
Sat Sep 11, 2021 11:06 pm
Forum: Engine Tech
Topic: Exhaust Duration, Boost and Elevation
Replies: 19
Views: 420

Re: Exhaust Duration, Boost and Elevation

Elevation is self compensating with a turbo charger, that is,,,the higher you go the thinner the air, this works in two ways, one, it provides less resistance to the exhaust gas at the outlet of the turbine/pipe allowing the turbine/ compressor to spin faster, and two, seeing as how now the compress...
by hoodeng
Thu Sep 09, 2021 9:40 pm
Forum: Engine Tech
Topic: Can this be honed out or does it need bored?
Replies: 13
Views: 1224

Re: Can this be honed out or does it need bored?

Might be time to pre bore the block to clean up, and then see if it is still viable.
by hoodeng
Tue Sep 07, 2021 9:04 pm
Forum: Engine Tech
Topic: Lubricating the backs of bearings
Replies: 92
Views: 6255

Re: Lubricating the backs of bearings

About thirty years ago David Vizard wrote a series of books on 'How to build and modify Chevrolet engines' these books appeared on more workshop shelves and speed shops than i can remember, and were considered a definitive augmentation to engine building practices. There are numerous mentions in fac...
by hoodeng
Mon Sep 06, 2021 8:10 pm
Forum: Engine Tech
Topic: Can this be honed out or does it need bored?
Replies: 13
Views: 1224

Re: Can this be honed out or does it need bored?

How many times have we heard of, or seen the efforts of people worrying an engine into rotation. They spend hours with diesel [or magic fluid that only their mates grandfather's cousin know the composition of] poured down a bore of some historic engine then pump the cylinder, smack the valves, jiggl...
by hoodeng
Sat Sep 04, 2021 10:30 pm
Forum: Engine Tech
Topic: Lubricating the backs of bearings
Replies: 92
Views: 6255

Re: Lubricating the backs of bearings

Hi fabr, it is not about the thickness of the oil [it is molecular and won't register on any measuring tools we have], it is about it's effect on dry crush retention.

Cheers.
by hoodeng
Sat Sep 04, 2021 12:57 am
Forum: Engine Tech
Topic: Lubricating the backs of bearings
Replies: 92
Views: 6255

Re: Lubricating the backs of bearings

There is a story that goes during WW2, Rolls Royce were under pressure to expand production of their Merlin engine, capacity at RR's facilities were stretched to the maximum and it became apparent that outside manufacturers would have to be enlisted to boost production. Ford UK was one of them, RR s...
by hoodeng
Fri Sep 03, 2021 11:00 pm
Forum: Engine Tech
Topic: Lubricating the backs of bearings
Replies: 92
Views: 6255

Re: Lubricating the backs of bearings

RMS, Ra, micron, call it what you will, a engineered, designed to spec, manufactured surface will have a spec of one of the previously mentioned on all surfaces from cast-finish to super-finishing. In engines all manufactured surfaces have a range of surface finish according to the products function...
by hoodeng
Thu Sep 02, 2021 3:53 am
Forum: Engine Tech
Topic: Lubricating the backs of bearings
Replies: 92
Views: 6255

Re: Lubricating the backs of bearings

I am interested,,, what is ATF made from?, according to some it is not oil based. That is true of synthetic oils that prevail today like Transmax etc. But that is also true of any synthetic oil replacing any mineral oil in any application. As far as i have known is that earlier ATF's like Dexron III...