[mikeb]

Where do I sign up? This is great news.

[Robert C.]

You can order from AllPontiac.com or BOP at a future date. Delv. is early spring. I will be kicking them in the butt to get them faster. Estmated price is $1,095.00 at this time. Material is 4130 forging, and Nitrided.

( Quoted from Wade at BOP)

2. The crank will NOT be cross drilled. It will incorporate the latest technology in crank oiling, scoop oil holes and straight shot oil timing. This process pressurizes at the low pressure part of the stroke and traps the oil wedge during the high pressure part of the stroke. Cross drilling forces the oil pressure to try and overcome combustion pressure of 1000 plus psi which and translate to 10,000 psi at the bearing. This force will push the oil right back out the journal and send it to another place in the crank. Straight shot traps the oil and it has no where to go but to the rod bearing. It is the best oiling system currently available for low or high HP motors at this time.)




As you all have seen, we at AllPontiac.com and BOP are going out of our way to produce the best race parts for a pontiac that have been ever made.


Get in line soon.

[lemans411]

when will you start taking orders? do you have to pay in full or are you taking deposits?

-rob

[cgeise]

Bob -- The info on the crank is great -- a couple of questions. Will they be available in both large and small main size and BB Chev rod bearing configuration? Your post indicated cross drilled -- there was a very good artical in the National Dragster by a major engine builder that was very much against cross drilling -- for a number of reasons -- Just some FYI for you guy's to look at. Will they be available in custom stroke sizes?

[Brian Baker]

Originally Posted by Robert C.

You can order from AllPontiac.com. Delv. is early spring. I will be kicking them in the butt to get them faster. Estmated price is $1,095.00 at this time. Material is 4130 forging, cross drilled and nitrated.


As you all have seen, we at AllPontiac.com go out of our way to produce the best race parts for a pontiac that have been ever made.


Get in line soon.

Nitrided.

"ide" = one molecule
"ite" = 2 molecules
"ate" = 3 molecules

[Nine Ninety]

( Quoted from Wade at BOP)

2. The crank will NOT be cross drilled. It will incorporate the latest technology in crank oiling, scoop oil holes and straight shot oil timing. This process pressurizes at the low pressure part of the stroke and traps the oil wedge during the high pressure part of the stroke. Cross drilling forces the oil pressure to try and overcome combustion pressure of 1000 plus psi which and translate to 10,000 psi at the bearing. This force will push the oil right back out the journal and send it to another place in the crank. Straight shot traps the oil and it has no where to go but to the rod bearing. It is the best oiling system currently available for low or high HP motors at this time.)

[/QUOTE]

Bob C, That is consistent with the response I got from Mark at Norwalk. We definitely need the high speed oiling system as opposed to the factory style oiling system.

David Reher's article from National Dragster provides some interesting information on why cross-drilled cranks shouldn't be used. Check it out at:

http://www.findarticles.com/p/articl...7/ai_n14799082

[Tom Vaught]

I have to agree that at this time a lot of Billet cranks coming out of Moldex are not cross-drilled.

We did some testing at Ford and found (like David
R.) that cross-drilling the crank did more bad than
good on high rpm engines and the oil hole did little
on the low rpm engines.

A better deal is to time (as was mentioned) the oil
feed location so that the oil has built up a "layer" of sufficient thickness so that when the crank sees maximum loading the crank and the bearing material never touch.

With a cross-drilled crank you have pulsing flow in the oil passage like a tuning pipe on an organ.
This pulsing creates high and low oil pressure conditions at the bearing surface which would like
see steady flow and pressure.

A 3/4 grooved bearing with a conventional Moldex
type oiling strategy is a better deal overall.

I believe the cranks have duplicated some of that thinking.

JMO

Tom V.

[Jeff V]

Originally Posted by Robert C.

You can order from AllPontiac.com or BOP at a future date. Delv. is early spring. I will be kicking them in the butt to get them faster. Estmated price is $1,095.00 at this time. Material is 4130 forging, and Nitrided.

( Quoted from Wade at BOP)

2. The crank will NOT be cross drilled. It will incorporate the latest technology in crank oiling, scoop oil holes and straight shot oil timing. This process pressurizes at the low pressure part of the stroke and traps the oil wedge during the high pressure part of the stroke. Cross drilling forces the oil pressure to try and overcome combustion pressure of 1000 plus psi which and translate to 10,000 psi at the bearing. This force will push the oil right back out the journal and send it to another place in the crank. Straight shot traps the oil and it has no where to go but to the rod bearing. It is the best oiling system currently available for low or high HP motors at this time.)




As you all have seen, we at AllPontiac.com and BOP are going out of our way to produce the best race parts for a pontiac that have been ever made.


Get in line soon.

If you read the post it says the crank will NOT be cross drilled...