What's the difference between..., the 1.7 and 2.0 exhaust? |
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What's the difference between..., the 1.7 and 2.0 exhaust? |
BMXerror |
Mar 12 2008, 06:29 PM
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#1
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Senior Member Group: Members Posts: 1,705 Joined: 8-April 06 From: Hesperia Ca Member No.: 5,842 |
Well, you read the title. I noticed that the gaskets are different for the two, but I thought they were interchangeable. What am I missing? Thanks.... Oh, yes... I had another similar question. Is the case bore for the cylinders bigger on the 2.0 than the 1.7? I know the heads are different, but I'm not sure about the case. Thanks again.
Mark D. |
SLITS |
Mar 12 2008, 06:33 PM
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#2
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"This Utah shit is HARSH!" Group: Benefactors Posts: 13,602 Joined: 22-February 04 From: SoCal Mountains ... Member No.: 1,696 Region Association: None |
Difference ....night and day ... 2.0 larger diameter pipe, no up sweep at the muffler end, different support on the tranny, different muffler. |
BMXerror |
Mar 12 2008, 07:11 PM
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#3
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Senior Member Group: Members Posts: 1,705 Joined: 8-April 06 From: Hesperia Ca Member No.: 5,842 |
Okay, so why do sellers of aftermarket headers never specify 1.7 or 2.0? If the gaskets are different I would think the headers would need to be different.
Mark D. |
Bleyseng |
Mar 12 2008, 07:13 PM
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#4
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Aircooled Baby! Group: Members Posts: 13,035 Joined: 27-December 02 From: Seattle, Washington (for now) Member No.: 24 Region Association: Pacific Northwest |
Yes, the case has to be bored for 2.0 cylinders Difference ....night and day ... 2.0 larger diameter pipe, no up sweep at the muffler end, different support on the tranny, different muffler. What? (IMG:style_emoticons/default/confused24.gif) the case bore is the same for a 1.7 or a 2.0L its the head register that needs to be enlarged to fit the 94mm cylinders. (IMG:style_emoticons/default/chair.gif) |
BMXerror |
Mar 12 2008, 07:27 PM
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#5
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Senior Member Group: Members Posts: 1,705 Joined: 8-April 06 From: Hesperia Ca Member No.: 5,842 |
Yes, the case has to be bored for 2.0 cylinders Difference ....night and day ... 2.0 larger diameter pipe, no up sweep at the muffler end, different support on the tranny, different muffler. What? (IMG:style_emoticons/default/confused24.gif) the case bore is the same for a 1.7 or a 2.0L its the head register that needs to be enlarged to fit the 94mm cylinders. (IMG:style_emoticons/default/chair.gif) Both the case and heads are different bore, I guess. Mark D. |
Dave_Darling |
Mar 12 2008, 08:11 PM
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#6
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914 Idiot Group: Members Posts: 14,991 Joined: 9-January 03 From: Silicon Valley / Kailua-Kona Member No.: 121 Region Association: Northern California |
All stock Type IV cases have the same spigots for the cylinders. The registers in the heads are smaller on the 1.7s, but that's it.
The 1.7 exhaust (also the 1974-only 1.8) is smaller diameter than the 73-74 2.0 exhaust. The muffler ends of the pipes are also a different distance apart. That said, any of the 914-4 exhausts will fit any of the 914-4 motors. --DD |
jimkelly |
Mar 12 2008, 08:16 PM
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#7
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Delaware USA Group: Members Posts: 4,969 Joined: 5-August 04 From: Delaware, USA Member No.: 2,460 Region Association: MidAtlantic Region |
2.0 and 1.7/1.8 style heat exchangers will fit on any engine but you will need a 2.0 muffler and 2.0 muffler hanger to use 2.0 he's - and a 1.7/1.8 muffler and a 1.7/1.8 muffler hanger to use 1.7/1.8 he's.
there are several dimensions of difference between the two styles at the muffler end - at the heads end they are the same. http://www.914world.com/bbs2/index.php?aut...blogid=312& as for headers - because they don't use a 2.0 or 1.7/1.8 muffler or associated muffler hanger - headers can be used on all engines. as for cylinder head exhaust gaskets - pelican does sell two styles - the difference must be extremely minimal ?? http://www.pelicanparts.com/catalog/shopca...p_pg1.htm#item3 |
rhodyguy |
Mar 13 2008, 08:01 AM
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#8
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Chimp Sanctuary NW. Check it out. Group: Members Posts: 22,090 Joined: 2-March 03 From: Orion's Bell. The BELL! Member No.: 378 Region Association: Galt's Gulch |
the flange bolt pattern is slightly dif on the 1.7/1.8 vs the 2.0. that's why the gaskets won't interchange.
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race914 |
Mar 13 2008, 09:31 AM
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#9
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73 914-4 Group: Members Posts: 1,006 Joined: 31-October 05 From: Nipomo, California (Central Coast) Member No.: 5,027 Region Association: Central California |
Here's a great diagram. Not mine but someone posted it here previously. If my memory worked... I'd remember who!
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Cap'n Krusty |
Mar 13 2008, 09:41 AM
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#10
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Cap'n Krusty Group: Members Posts: 10,794 Joined: 24-June 04 From: Santa Maria, CA Member No.: 2,246 Region Association: Central California |
Yes, the case has to be bored for 2.0 cylinders Difference ....night and day ... 2.0 larger diameter pipe, no up sweep at the muffler end, different support on the tranny, different muffler. Uhhhhhhh, Slits? NO, THE CASE DOESN'T HAVE TO BE BORED FOR 2.) CYLINDERS. We now return to our regularly scheduled programming. Can't we put answers to questions like these in some sort of FAQs? The Cap'n |
SLITS |
Mar 13 2008, 06:54 PM
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#11
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"This Utah shit is HARSH!" Group: Benefactors Posts: 13,602 Joined: 22-February 04 From: SoCal Mountains ... Member No.: 1,696 Region Association: None |
So I fuched up ... you obviously mistook this face for someone who gives a shit.
I do have an eraser on my pencil. Next! |
BMXerror |
Mar 13 2008, 09:30 PM
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#12
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Senior Member Group: Members Posts: 1,705 Joined: 8-April 06 From: Hesperia Ca Member No.: 5,842 |
So I fuched up ... you obviously mistook this face for someone who gives a shit. I do have an eraser on my pencil. Next! (IMG:style_emoticons/default/av-943.gif) Thanks guys! Yes, Cap'n. An FAQ section would be great. Mark D. |
orange914 |
Mar 13 2008, 10:59 PM
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#13
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http://5starmediaworks.com/index.html Group: Members Posts: 3,371 Joined: 26-March 05 From: Ceres, California Member No.: 3,818 Region Association: Northern California |
So I fuched up ... you obviously mistook this face for someone who gives a shit. I do have an eraser on my pencil. Next! thats not an eraser in gumbys mouth (IMG:style_emoticons/default/smoke.gif) (IMG:style_emoticons/default/happy11.gif) ALSO the stainless steel 1.7/1.8 and the 2.0 I.D. is the same, never confirmed that though mike |
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