 2.0 Runners vs 1.7 runners?, 1971 1.7 Megasquirt install |
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| falconfp2001 |
 Mar 20 2012, 03:04 PM
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#1
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Pancho Pantera  Group: Members Posts: 451 Joined: 5-December 10 From: Downey, CA Member No.: 12,456 Region Association: Southwest Region  |
I'm working on my MegaSquirt conversion and need some information. I'm going to use the 2.0 intake plenum on my 1.7.
Can I use the 2.o intake runners and just drill for the 4 bolt pattern? Anyone? Thanks Frank |
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| type47 |
Mar 20 2012, 03:08 PM
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#2
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Viermeister Group: Members Posts: 4,254 Joined: 7-August 03 From: Vienna, VA Member No.: 994 Region Association: MidAtlantic Region |
you'll have to drill them; 2L and 1.7L runners are different diameter and length so no mix and match
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| falconfp2001 |
Mar 20 2012, 06:38 PM
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#3
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Pancho Pantera Group: Members Posts: 451 Joined: 5-December 10 From: Downey, CA Member No.: 12,456 Region Association: Southwest Region |
Anyone know what the OD is on the 2.0 intake runners?
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| 3d914 |
Mar 20 2012, 07:24 PM
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#4
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Senior Member Group: Members Posts: 1,275 Joined: 24-September 03 From: Benson, AZ Member No.: 1,191 Region Association: Southwest Region |
falcon,
OD on 2.0 runners is just over 1.5" (39mm) - that's measured w/o my glasses but with a calipers. (IMG:style_emoticons/default/biggrin.gif) IIRC the 2.0 runners should be larger OD (and ID) than the 1.7. Here's a link to my 2.0 MS conversion specs. |
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| falconfp2001 |
Mar 20 2012, 07:36 PM
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#5
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Pancho Pantera Group: Members Posts: 451 Joined: 5-December 10 From: Downey, CA Member No.: 12,456 Region Association: Southwest Region |
QUOTE(3d914 @ Mar 20 2012, 06:24 PM)  falcon, OD on 2.0 runners is just over 1.5" (39mm) - that's measured w/o my glasses but with a calipers. (IMG:style_emoticons/default/biggrin.gif) IIRC the 2.0 runners should be larger OD (and ID) than the 1.7. Here's a link to my 2.0 MS conversion specs. Thanks, that should work for a 1.5 coupler with some HD hose clamps used for turbo couplers. |
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| JamesM |
Mar 20 2012, 09:22 PM
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#6
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Senior Member Group: Members Posts: 1,895 Joined: 6-April 06 From: Kearns, UT Member No.: 5,834 Region Association: Intermountain Region |
Why not just use 1.7 injection parts on your 1.7?
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| falconfp2001 |
Mar 20 2012, 09:34 PM
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#7
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Pancho Pantera Group: Members Posts: 451 Joined: 5-December 10 From: Downey, CA Member No.: 12,456 Region Association: Southwest Region |
QUOTE(JamesM @ Mar 20 2012, 08:22 PM) Why not just use 1.7 injection parts on your 1.7? I'm gonna upgrade the motor in the future and plan to use 3 bolt heads if I can find them. I also think the 2.0 plenum has better flow and it is also better suited to installing an upgraded IAT sensor along with a IAC valve to run MegaSquirt. The TB is not that much bigger and the larger flat fours usually bore out the 2.0 TB for performance running. I should also be able to utilize the 1.7 wiring harness and sensors to work on the 2.0 intake system mounted on a 1.7, in theory. |
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