building a 1911 from a 1.7, will my existing heads work? |
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building a 1911 from a 1.7, will my existing heads work? |
bradtho |
Aug 22 2011, 11:18 PM
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#1
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Member Group: Members Posts: 266 Joined: 22-December 09 From: Seattle, WA Member No.: 11,165 Region Association: None |
I'm thinking about taking my stock 1.7 to a 1911. Some old threads seem to suggest that you can't do this with the 1.7l heads, while others seem to suggest it's fine. Can anybody set me straight on if I would need new heads, if they'd need to be machined, or if I'm good to go?
Also, I've got 2 engines all with original german cylinders. Am I better off taking the best 4 and boring them out or going with new chinese cylinders (local shop recommends QSC). I've been thinking if I've got 4 decent ones that the OE cylinders would likely be better than the chinese stuff. anything else I should be thinking about? |
HAM Inc |
Aug 28 2011, 07:59 AM
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#2
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Senior Member Group: Members Posts: 846 Joined: 24-July 06 From: Watkinsville,GA Member No.: 6,499 Region Association: None |
I'm not going to comment on the Chinese cylinders other than to report that they don't all come out the same size, so if you do buy a set, take them to a shop along with the pistons and have the clearances measured.
If you do use the Chinese cylinders save/sell your good used 1.7 cylinders. They can be bored for 90.5 pistons for someone who wants to build the long stroke/small bore 2.liter. |
lonewolfe |
Aug 3 2015, 01:50 AM
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#3
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Senior Member Group: Members Posts: 819 Joined: 12-September 11 From: Oakland, CA Member No.: 13,549 Region Association: Northern California |
I'm not going to comment on the Chinese cylinders other than to report that they don't all come out the same size, so if you do buy a set, take them to a shop along with the pistons and have the clearances measured. If you do use the Chinese cylinders save/sell your good used 1.7 cylinders. They can be bored for 90.5 pistons for someone who wants to build the long stroke/small bore 2.liter. I know this thread is old but who makes the 90.5 Pistons and where do you buy them? Are these VW Type 1 Mahle "B" Pistons? |
914_teener |
Aug 3 2015, 09:48 AM
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#4
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914 Guru Group: Members Posts: 5,197 Joined: 31-August 08 From: So. Cal Member No.: 9,489 Region Association: Southern California |
I'm not going to comment on the Chinese cylinders other than to report that they don't all come out the same size, so if you do buy a set, take them to a shop along with the pistons and have the clearances measured. If you do use the Chinese cylinders save/sell your good used 1.7 cylinders. They can be bored for 90.5 pistons for someone who wants to build the long stroke/small bore 2.liter. I know this thread is old but who makes the 90.5 Pistons and where do you buy them? Are these VW Type 1 Mahle "B" Pistons? I am still contemplating this as well as I get ready to pull the trigger. I seem to recall the Len was no longer doing the Q heads. I also have heard that the long stroke smaller bore engine produces lots of torque quickly with those heads meaning the 1.7 heads. Anybody have any experience with a longer stroke smaller bore engine? No hijack intended. |
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