2270(or so) Build |
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2270(or so) Build |
yeahmag |
Jan 8 2021, 12:47 PM
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#1
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Advanced Member Group: Members Posts: 2,421 Joined: 18-April 05 From: Pasadena, CA Member No.: 3,946 Region Association: Southern California |
I'm starting to get the case(s) machined and inspected and parts ordered for my next generation engine. The car is mostly used for autocross.
78x96 96mm piston with 22mm wrist pin (stroker) 5.4" Type 1 Rod, 22mm wrist pin WebCam 86b/86c David Finch heads (from Len Hoffman many moons ago) 9.5:1 CR running on 91 octane pump gas CB Dry Sump (heavily modified) or Thorsten Piper dry sump pump Front mounted oil cooler There are a few crank options out there now: * DPR offset grind Type 1 journal * AA Performance Forged Type 1 journal * FAT Performance Forged Chevy journal I've read about a few 80mm DPR cranks breaking, so I was planning on staying under 80mm as I like the car to be able to rev. I was considering Chevy journals for ease of assembly, but the two cranks I've read about breaking were 80mm/Chevy journals. Is there any new information on cranks out there? Any input on the config? |
Mark Henry |
Jan 20 2021, 08:09 AM
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#2
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that's what I do! Group: Members Posts: 20,065 Joined: 27-December 02 From: Port Hope, Ontario Member No.: 26 Region Association: Canada |
You do realize high lift cams like the 163/86b require dual springs and all the valve train upgrades right?
A stroker crank is far from the easiest engine to build and while it's been done it's not one I'd recommend for your very first engine build. |
Blown59 |
Jan 20 2021, 03:06 PM
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#3
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Member Group: Members Posts: 66 Joined: 21-July 19 From: St Louis Member No.: 23,315 Region Association: None |
You do realize high lift cams like the 163/86b require dual springs and all the valve train upgrades right? A stroker crank is far from the easiest engine to build and while it's been done it's not one I'd recommend for your very first engine build. Thank you for correcting my cam flex concerns. And yes, dual springs, valve train and head work are all part of the build amongst other aspects. Everyone needs to learn one way or another. How many engines have how many people screwed up in learning?? Its all part of the process. And if I spend money building one to learn on and spend more to build the next stroker... The cost is still more than one stroker engine. Either way, it cost more than one build. And who knows.... First stroker may last 70k???? In which case, money well spent. Time will tell... In the meantime, I enjoy reading. |
VaccaRabite |
Jan 21 2021, 08:28 AM
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#4
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En Garde! Group: Admin Posts: 13,437 Joined: 15-December 03 From: Dallastown, PA Member No.: 1,435 Region Association: MidAtlantic Region |
Everyone needs to learn one way or another. How many engines have how many people screwed up in learning?? Its all part of the process. And if I spend money building one to learn on and spend more to build the next stroker... The cost is still more than one stroker engine. Either way, it cost more than one build. And who knows.... First stroker may last 70k???? In which case, money well spent. Time will tell... In the meantime, I enjoy reading. My first motor ran about 10 miles before I had to tear it apart due to low oil pressure because I was learning. I missed something that anyone with experience would have taken for granted and I just didn't understand fully at the time. Second motor ran hundreds of miles before I tore it apart to try something different. Nothing was "wrong" with the motor, but I had learned more and wanted to change things on the top end. Third motor has run thousands of miles. I have to fight the urge every season not to tear it down to build something else. I really want to build a stroker to replace my 2056, but with the 2056 running so well... Zach |
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