Don Terrill’s Speed-Talk

that gives you a .3705 factor according to Bret's algorithm, which is not that bad at all. that algorithm is as good as any. would i want to run 24 heurs du mans with that combination ?

maybe not. would i go drag racing with it ? oh yeah buddy.

Bret,

it has taken years but i finally think i fully understand the balances of journal overlap in conjunction with bearing speed.

thank you.

Henry

Good deal. This could be very helpful for a lot of folks. Question: If this goes far enough for Clutch Pro, would it be possible to switch out for Clutch Pro M ? Also, I'm assuming Clutch Pro will let you substitute the result of the gear multiplications for 2nd, 3rd, and 4th to calculate slip rpm i...

I did ask in a previous thread about bearing crush with no answers. Should you be looking for more compared to an iron block. Will the expansion of the bore decrease the crush? how much should you have with the alloy block? Mitch, Here's what I found, and keep in mind these afr are an old set of be...

I did ask in a previous thread about bearing crush with no answers. Should you be looking for more compared to an iron block. Will the expansion of the bore decrease the crush? how much should you have with the alloy block? I have a set of bearings laying around that were punished pretty badly a fe...

I did ask in a previous thread about bearing crush with no answers. Should you be looking for more compared to an iron block. Will the expansion of the bore decrease the crush? how much should you have with the alloy block? I wish I could give you a good answer, but I'll just do a little thinking o...

I thought that all alloy blocks had the sleeves out .005". I suppose they built them like this for a reason but they do mention that the final assembly is dependent on what the engine builder wants. I would leave it as manufactured. The very first RDI block we got, we tried to zero deck it. Bu...

so whats the consensus? do you run a little more main clearance due to block distortion from heat. something like 3-3 1/2 thousanths. this will be a fairly mild engine as far as racing goes. maybe 850 hp. i need to buy a block.what do you recommend? Based on everything I've read here and my own exp...

Quick changwe of subject:

We've found the .005 out of the deck works just fine with dead soft copper and hylomar spray as well as with cometics with no spray.

We run the same clearances as we did in the bowtie block. The only thing we did different was the deck clearance. We run the sleeve .005 above the deck on the aluminum block. Same .005 we use in the Fuel Car with the billet TFX block. LOL. You're making me skeerd ! Well, if I try it, I'll do it to ...

There is no such thing as radial expansion. In such a situation, the diameter of the hole increases in proportion to temperature, just as for the length and width of the parent material. Thermal expansion is 7 parts per million per degree F. for iron and 12 for aluminum. If a 6" square iron pl...

I will say there is potential in a modern 2 ring n/a engine done correctly.

Yes, to paraphrase jimivice , a hole (e.g. a main bearing bore) in any material that exhibits thermal expansion (i.e. pretty well anything) will get larger as it's temperature increases. Since aluminum expands at about twice the rate of iron, the bores will grow larger than for an iron block. Given...

On an iron motor we ran tighter clearance and with the same oil clearance on an aluminum motor with same crank clearance I spun 2 main bearings. I have a heater on the pan so the oil is hot. I totally agree that his motor will probably run hotter oil temps than a drag motor but aluminum motors need...

bigjoe1 wrote:NO---- I dont do very many NOS deals. The ones I do do, they eat up pistons soooo bad I dont do anything very trick to them at all. I hope I have got rid of all my NOS customers. Most of my stuff is drag race, high RPM stuff.

JOE SHERMAN RACING ENGINES

Cool. Thank you again.