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#1
08-09-2005, 09:18 AM
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Forged Cranks
I saw BOP's new catalog this weekend at Norwalk.
Mark said look on the back cover. FORGED CRANK available soon! And probably a reasonable price. WOW, just in time for me.  Thanks, BOP!
__________________
John Wallace - johnta1 Pontiac Power RULES !!! www.wallaceracing.com Winner of Top Class at Pontiac Nationals, 2004 Cordova Winner of Quick 16 At Ames 2004 Pontiac Tripower Nats KRE's MR-1 - 1st 5 second Pontiac block ever! W.E.C moment "Every man has a right to his own opinion, but no man has a right to be wrong in his facts." "People demand freedom of speech to make up for the freedom of thought which they avoid." – Socrates |
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#2
08-09-2005, 09:40 AM
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AllPontaic.com and BOP will be making anouncement soon! And yes, we are working together on this project. The stroke will be from 4.00 to 4.500.
Stay tuned.
__________________
 Bob C.Quickest, Fastest, Best selling Pontiac Aftermarket Block IA II and Tiger Heads Boss Bird Funny Car Best pass to date 08/06/2016 [email protected] Allpontiac Big Chief Aluminum Engine Block http://www.AllPontiac.com |
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#3
08-09-2005, 10:19 AM
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*gets in line*
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#4
08-09-2005, 10:42 AM
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That is great news and bad news for me. Do I go ahead with my engine plans or put things on hold now until the cranks become available? These really are good times to be in the Pontiac hobby.
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#5
08-09-2005, 12:01 PM
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Where do I sign up? This is great news.
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#6
08-09-2005, 12:19 PM
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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.
__________________
Bob C.Quickest, Fastest, Best selling Pontiac Aftermarket Block IA II and Tiger Heads Boss Bird Funny Car Best pass to date 08/06/2016 [email protected] Allpontiac Big Chief Aluminum Engine Block http://www.AllPontiac.com Last edited by Robert C.; 08-09-2005 at 04:41 PM. |
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#7
08-09-2005, 12:21 PM
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when will you start taking orders? do you have to pay in full or are you taking deposits?
-rob |
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#8
08-09-2005, 12:23 PM
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Bob...why the cross drilling? I've read alot on the subject from Reher-Morrison and they strongly advise against it in most cases. I'll take mine with standard Pontiac drilling with the oil holes chamfered (wink).
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Just a blind squirrel looking for a nut. |
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#9
08-09-2005, 12:26 PM
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Crank Info
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?
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#10
08-09-2005, 12:28 PM
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Will they be knived edge or anything like that or will they be just like the stock cranks but forged? I tried calling but no answer will try again later.
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#11
08-09-2005, 12:39 PM
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Quote:
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.) I changed this posts to reflect the correct information. 8-10-05 rjc. They will have a semi knive edging done but not a full knife edge.
__________________
Bob C.Quickest, Fastest, Best selling Pontiac Aftermarket Block IA II and Tiger Heads Boss Bird Funny Car Best pass to date 08/06/2016 [email protected] Allpontiac Big Chief Aluminum Engine Block http://www.AllPontiac.com Last edited by Robert C.; 08-10-2005 at 08:23 AM. |
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#12
08-09-2005, 12:52 PM
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Will there be an option to not have it crossed drill for those that will be turning alot of rpm and making the hp? I hope you get a LARGE first shipment because I think they will be going fast.
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#13
08-09-2005, 01:36 PM
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What is the difference in 4130 steel and 4340 steel?
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#14
08-09-2005, 02:15 PM
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Quote:
Define "low horsepower motor". The whole purpose of this crank is for those making in excess of 750-HP, is it not? I mean, it'll be a better bet over a cast in any application, but the cast cranks have already been proven to 750-HP reliably.
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Just a blind squirrel looking for a nut. Last edited by Brian Baker; 08-09-2005 at 02:21 PM. |
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#15
08-09-2005, 02:53 PM
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Quote:
"ide" = one molecule "ite" = 2 molecules "ate" = 3 molecules
__________________
Just a blind squirrel looking for a nut. |
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#16
08-09-2005, 03:09 PM
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Society of Automotive Engineers (SAE) is used in specifications for all high-grade steels used in automotive and aircraft construction...
Each SAE number consists of a group of digits...(normally 4, but not always) The first digit represents the type of steel...(pricipal alloy element) The second digit represents the percentage of the principle alloying element... The last two or three usually, represent the percentage, in hundredths of 1 percent, of carbon in the alloy... For example, SAE number 4130 indicates Molybdenum steel containing 1 percent molybdenum and 30 hundredths of 1 percent of carbon... Here is the steel chart... Carbon 1xxx Nickel 2xxx Nickel-chromium 3xxx Molybdenum 4xxx Chromium 5xxx Chromium-vanadium 6xxx Tungsten 7xxx Silicon-manganese 8xxx I hope this helps...
__________________
1969 Firebird, Tx3-455/468 machined by CVMS E-heads by Dave Wilcox/Comp Cams 300B-6 flat solid 850DP on E-85 by Eric Niefert/T2 1" plastic spacer T-400/PTC 4000/390's/30x9 Hoosier radial slicks,#3400 1.38 60' 6.32 @ 108 MPH at Northeast Dragway NC 5/23/15 (9th pass on new engine) https://m.youtube.com/watch?v=ePCu2v...ature=youtu.be 1.37 60' 6.26 @ 109 half track, 9.86 @ 136 1/4 mile, #3350 11/26/16 at Richmond Dragway (125th pass on new engine) |
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#17
08-09-2005, 03:13 PM
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Nitriding is not part of the original alloy.
It's basically a process or 'coating' that makes the surface harder.
__________________
John Wallace - johnta1 Pontiac Power RULES !!! www.wallaceracing.com Winner of Top Class at Pontiac Nationals, 2004 Cordova Winner of Quick 16 At Ames 2004 Pontiac Tripower Nats KRE's MR-1 - 1st 5 second Pontiac block ever! W.E.C moment "Every man has a right to his own opinion, but no man has a right to be wrong in his facts." "People demand freedom of speech to make up for the freedom of thought which they avoid." – Socrates |
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#18
08-09-2005, 03:44 PM
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A couple of clarifications on the forged crank deal.
1) The material will be a 4340 non-twist forging. 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. 3) The 3 inch main cranks will be available in 4, 4.25, and 4.5 inch strokes with 2.200 rod journals. 4) We are hoping to produce a 3 ¼ main but do not yet know if it will happen. If it does it will probably be available in a 4.250 stroke only. 5) Target price is $1095.00 but is not definite at this time. 6) The cranks will be gas nitrided, no induction hardening 7) Neither BOP Engineering or All-Pontiac.com are taking orders at this time We will have more information soon so please be patient. With that said we are pleased to be working together with Frank and Bob to bring high quality racing parts to the Pontiac community.
__________________
Wade Congdon BOP Engineering Hi-Performance Specialty Parts for Buick, Olds, and Pontiac www.bopengineering.com |
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#19
08-09-2005, 03:52 PM
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Thank you for the clarification, Wade.
__________________
Just a blind squirrel looking for a nut. |
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#20
08-09-2005, 05:40 PM
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( 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 |
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