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| vjb206 |
Feb 26 2024, 03:52 PM
Post
#1
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Newbie ![]() Group: Members Posts: 32 Joined: 23-December 19 From: New Jersey Member No.: 23,760 Region Association: North East States |
Hey folks! I have the bottom-end of my 2270 assembled and spinning freely. Thanks to all who helped me get to this point!
(IMG:http://www.914world.com/bbs2/uploads_offsite/media.giphy.com-23760-1708984357.1.gif) To quickly recap: I bought the 2257 kit from AA Pistons (78mm stroke, 5.158" rods, etc.). And when I threw a P&C on for a test-fit last weekend, I immediately noticed the piston sitting proud of the deck height at TDC (negative deck) by about 2mm. (IMG:http://www.914world.com/bbs2/uploads_offsite/media.giphy.com-23760-1708984358.2.gif) Before I overreact, or buy the wrong stuff, I thought I'd ping the community...
Once I figure out whether or not this is normal (I.E. verifying that I don't have to backtrack), I'll get into the CR questions (just waiting on clear plastic from Amazon so that I can measure my CC volume this weekend) (IMG:style_emoticons/default/biggrin.gif) Thanks! |
vjb206 2270 Deck Height and CR Feb 26 2024, 03:52 PM
Jack Standz 1. It's all in the combination, what pin heig... Feb 26 2024, 08:23 PM
r_towle Did you buy the long liners?
I’m guessing those ... Feb 26 2024, 08:32 PM
Jack Standz Strokers are a lot of fun but also a lot more work... Feb 26 2024, 08:38 PM
Krieger Why don't you call AA and see what they have t... Feb 27 2024, 12:16 AM
VaccaRabite You are asking the wrong question.
Stop everything... Feb 27 2024, 06:54 AM
Montreal914 Read!
Here, on Shoptalkforums, other places…... Feb 27 2024, 11:30 AM
cgnj @vjb206
That looks like my motor did. It is curr... Feb 27 2024, 12:11 PM
MikeK You can shim the cylinder base, use a copper gaske... Feb 27 2024, 12:16 PM
Jack Standz
You can shim the cylinder base, use a copper gask... Feb 27 2024, 01:03 PM
MikeK
You can shim the cylinder base, use a copper gas... Feb 27 2024, 03:35 PM
vjb206 @MikeK great idea! Don't want any scoring... Feb 27 2024, 01:02 PM
VaccaRabite
[b]@[url=http://www.914world.com/bbs2/index.php?... Feb 29 2024, 07:08 AM
Jack Standz There's more to the compression calculation an... Feb 27 2024, 01:14 PM
cgnj @vjb206
I lied somewhere. I said my chamber volum... Feb 27 2024, 04:31 PM
r_towle You need to swap the short cylinders with the long... Feb 27 2024, 06:09 PM
densible1 You'll need to shim bottom of cylinder to achi... Feb 27 2024, 06:23 PM
technicalninja
[b]@[url=http://www.914world.com/bbs2/index.php... Feb 29 2024, 09:39 AM
Geezer914 Almost 1/4" of shims, isn't that a lot? ... Feb 29 2024, 11:26 AM
Jack Standz +1
Yes, agree with post #18 from the ninja above.... Feb 29 2024, 11:42 AM
technicalninja I'm planning on re-using the original Mahle cy... Feb 29 2024, 01:10 PM
vjb206 Did some measurements this weekend!
http://ww... Mar 5 2024, 09:01 PM
Superhawk996 Have you fully researched the use of head gaskets?... Mar 5 2024, 11:03 PM
vjb206
Have you fully researched the use of head gaskets... Mar 6 2024, 08:30 AM
930cabman
Have you fully researched the use of head gaskets... Mar 6 2024, 10:09 AM
technicalninja
Did some measurements this weekend!
[img]htt... Mar 6 2024, 10:00 AM
technicalninja I missed a critical point!
Check deck height ... Mar 6 2024, 10:38 AM
Montreal914 Detail in the grand scheme of things in the curren... Mar 6 2024, 03:09 PM
r_towle I think you need the longer cylinders from AA. Mar 6 2024, 05:49 PM
Jack Standz
Did some measurements this weekend!
[img]ht... Mar 6 2024, 10:27 PM
vjb206 If I'm 90 under and get a 90 shim I'll be ... Mar 7 2024, 03:16 PM
Superhawk996
Can / should multiple cyl base shims be stacked ... Mar 7 2024, 06:58 PM
vjb206 Just going to do some more reading before pulling ... Mar 7 2024, 09:16 PM
Jack Standz
I think you need the longer cylinders from AA.
... Mar 6 2024, 10:35 PM
crash914 Also don't forget:
Pushrods will not be stock.... Mar 7 2024, 12:22 PM
vjb206 Definitely planning on getting deep into the valve... Mar 7 2024, 03:13 PM
930cabman My vote goes to NO head gasket Mar 7 2024, 03:24 PM
technicalninja Proper quench distance is far more important than ... Mar 7 2024, 10:44 PM
vjb206
Proper quench distance is far more important than... Mar 18 2024, 06:40 PM
cgnj @vjb206
I used a .140 shim. No head gasket. I la... Mar 7 2024, 11:31 PM
vjb206
[b]@[url=http://www.914world.com/bbs2/index.php?s... Mar 8 2024, 04:11 PM
Jack Standz
Proper quench distance is far more important than... Mar 8 2024, 02:27 AM
VaccaRabite I'd say that if you got 60cc measuring with yo... Mar 8 2024, 12:25 PM
vjb206 I honestly never thought about the pushrod tube le... Mar 8 2024, 04:11 PM
GBX0073 Rubber bands were mentioned found this picture to ... Mar 10 2024, 12:14 AM
vjb206
Rubber bands were mentioned found this picture to... Mar 18 2024, 06:35 PM
technicalninja
[quote name='cgnj' post='3132716' date='Mar 8 202... Mar 10 2024, 12:26 PM
vjb206
[quote name='cgnj' post='3132716' date='Mar 8 20... Mar 18 2024, 06:36 PM
vjb206 Just to close the loop here, I ordered a few shims... Mar 19 2024, 08:18 AM
technicalninja I'd run 9.5-10 on that cam.
It's a good s... Mar 19 2024, 08:46 AM
technicalninja Watch for evidence of exhaust back pressure if you... Mar 19 2024, 09:31 AM
burton73 Here is a picture of Marks 2270 RAT built 2005 Eng... Mar 19 2024, 10:37 AM
cgnj @vjb206 Based on your measurements, I think your ... Mar 19 2024, 11:02 AM
burton73 Mark to show shim on the RAT rebuild 2270
Bob B
Mar 19 2024, 11:58 AM
technicalninja OOOHHHH!
Pretty pictures!
Thanks Bob!
... Mar 19 2024, 01:04 PM
Jack Standz Yes, noticed that too. We run phenolic spacers w... Mar 19 2024, 01:25 PM
cgnj I cut my own gaskets. CSP linkage threaded rods to... Mar 19 2024, 02:38 PM
burton73 The picture of intake port is from the moment of t... Mar 19 2024, 03:15 PM
VaccaRabite
The Windage tray modification was a RAT deal in... Mar 20 2024, 05:22 AM
technicalninja When I'm "finished" with port matchi... Mar 19 2024, 05:21 PM![]() ![]() |
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