Don Terrill’s Speed-Talk

Interesting...

What was the bearing clearance?

“But too much side clearance will just reduce oil pressure if its too wide” Does side clearance really have that much influence? Or is it the bearing clearance that is the restriction and the side clearance irrelevant to oil pressure? With your logic a larger exhaust tip makes the entire exhaust sys...

Crest CNC made a billet barra block last year.

https://www.facebook.com/11332770679161 ... 284577287/

Actually looks like a barra block too.

SchmidtMotorWorks wrote: ↑Fri May 29, 2020 10:48 am
I am working on an electric flying car.

If that had come from any one else it would almost be laughable. All the best Jon, please keep us updated with the project if possible.

Chris

I believe dwilliams is asking about head gasket sealing rings. (Not piston rings)

I am keen for wills rings suppliers info also.

Sorry, the fuel is Methanol.

The photo below is from a wet sleeve V6, large twin turbos, heavily boosted. overheated bore.png All bores have colour in them at the top. I have not seen this before, how common is this? Coolant temp was stable, I believe the heat couldn't get to the coolant, possibly due to liner thickness. Thanks...

What is wrong with the accusump design in you’re opinion?

Is there plenty of room between the lobes? As long as oil can escape and the lobes are in clearance you should be fine. Any more pics? What engine is it for?

I have thought about using normal 6061 for this and then honing for the surface finish.

Please keep us posted on how you go.

Perhaps you can use some buckets from a different engine with thicker posts.

Supertech lists some 37mm buckets with post thickness ranging from 3.3 - 3.9mm

http://supertechperformance.com.au/cam-followers-p5922

I'm not sure of any engines that use shimless buckets in that diameter though.

What diameter are the buckets?

Can anyone shed some light on why some blocks and head castings have a small raised pattern across the surface?
Is it to increase surface area or something else entirely?

Thanks

There are several dry sump kits on the market to suit such as:


http://rogerclarkmotorsport.co.uk/store ... m-ej202225

Charlie, can you tell us some more about the buckets you saw?

Diameter and how aggressive the dome was?

I guess it is for the nissan v8 running in the Aus supercar series?

http://www.enginelabs.com/news/video-in ... ar-engine/

Bit hard to tell from those photos