 1911 build from 1.7 which budget parts from AA, Hold my hand like a child |
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| nditiz1 |
 Apr 23 2025, 04:12 PM
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Senior Member  Group: Members Posts: 1,262 Joined: 26-May 15 From: Mount Airy, Maryland Member No.: 18,763 Region Association: MidAtlantic Region 
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So I'm debating doing the top end on my 1.7 I recently dropped a valve on.
Looks like I can buy all items from AA performance. Can I just buy the 1.7/1.8 96mm P&C and the 1.8 AMC heads and call it a day? I'm getting confused on what I read about opening to 105mm bore on the 1.7 heads for 96mm Pistons. The AA website talks about modifying heads to 103mm bore. I guess I could also just use 2.0 heads, but my tin wouldn't match. Sorry for being dumb... |
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| Superhawk996 |
Apr 23 2025, 06:37 PM
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914 Guru Group: Members Posts: 7,592 Joined: 25-August 18 From: Woods of N. Idaho Member No.: 22,428 Region Association: Galt's Gulch
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Friends don’t let friends play with 1.8L’s.
I have zero hands on experience with 1.8L’s. And some of them even had this funky thing called L-jet? Regardless. 1.8L is a 93mm bore - not 94mm like stock 2.0L. So I THINK that sets up the OD of the cylinder such that you still have to open the head to get to 96mm cylinders. This is probably the 2mm discrepancy between openings 103 vs 105? I do have a set of 96mm AA cylinders in storage if you need a measurement. Likewise, I’m sure AA Perfoemance should be able to clear up with a phone call with absolute certainty . . . Or a 1.8l guy will chastise me. Rightly so. (IMG:style_emoticons/default/happy11.gif) |
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Posts in this topic
nditiz1 1911 build from 1.7 which budget parts from AA Apr 23 2025, 04:12 PM
porschetub
So I'm debating doing the top end on my 1.7 I... Apr 23 2025, 05:11 PM Superhawk996 Plan on opening the heads.
The NPR 96’s have ... Apr 23 2025, 05:18 PM nditiz1 So the original plan was to rebuild the 1.7 heads.... Apr 23 2025, 06:02 PM
mate914
So the original plan was to rebuild the 1.7 heads... Apr 23 2025, 06:40 PM
JamesM
So the original plan was to rebuild the 1.7 heads... Apr 24 2025, 10:02 PM Superhawk996 Just going to post this - take as one man’s opi... Apr 23 2025, 06:46 PM 914sgofast2 The quick and dirty thing to do would be to buy a ... Apr 24 2025, 12:38 PM nditiz1 What is the need for rebuilding the rods?
This wo... Apr 24 2025, 12:45 PM Superhawk996
What is the need for rebuilding the rods?
When ... Apr 24 2025, 01:36 PM mepstein
What is the need for rebuilding the rods?
This w... Apr 24 2025, 07:45 PM euro911 I have all my machine work done by European Motor ... Apr 24 2025, 01:00 PM dr914@autoatlanta.com we do 1911 96mm and new 1.8 heads
So I'm de... Apr 24 2025, 02:25 PM nditiz1 The spark plug end was destroyed. Bore scope show... Apr 24 2025, 03:53 PM 930cabman
The spark plug end was destroyed. Bore scope sho... Apr 25 2025, 10:39 AM Robarabian I did this. 1.8 heads work fine. It all fits. Use... Apr 24 2025, 08:44 PM rfinegan Jake Raby put a paper together on upgrading a type... Apr 25 2025, 05:57 AM Superhawk996
Jake Raby put a paper together on upgrading a typ... Apr 25 2025, 08:07 AM |
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