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> I bought 1.7L heat exchanger, Why dont they fit!!
jporsche914
post Jul 19 2004, 04:24 PM
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I bought SS Heat exchangers from a fellow 914 owner that are supposed to fit a 1972 1.7L and the exchanger are too short. What does this mean are they 2.0L Heat exchangers??
Thanks
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Joe Ricard
post Jul 19 2004, 04:35 PM
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What does it look like. Do the tail pipe ends swoop up or go straight. Those are the only two styles out there unless it was modified by some one.
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jporsche914
post Jul 19 2004, 04:42 PM
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Here is a picture of them.


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jporsche914
post Jul 19 2004, 04:54 PM
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Here is the back side


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jporsche914
post Jul 19 2004, 05:04 PM
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Are these 2.0L Heat exchangers
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nebreitling
post Jul 19 2004, 05:07 PM
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QUOTE(jporsche914 @ Jul 19 2004, 03:04 PM)
Are these 2.0L Heat exchangers

yup
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jporsche914
post Jul 19 2004, 05:11 PM
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How can you tell the difference.
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Ray Warren
post Jul 19 2004, 05:17 PM
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These are 1.7 HE's.
You will need a 2.0L muffler and hanger to use the ones you have.


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bondo
post Jul 19 2004, 05:17 PM
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The 1.7 heat exchangers have an s curve in them, that positions the outlet higher up than the part of the HE that has the sheet metal wrapped around it. 2.0 heat exchangers may be worth more, you might be able to sell them, buy the right ones, and have money left over (IMG:style_emoticons/default/smile.gif) You can also use them as is, but you'll need a 2.0 muffler hanger and muffler.
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SirAndy
post Jul 19 2004, 05:52 PM
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1.7/1.8 SSI exchangers, see the upward bend at the end?
2.0 exchangers are straight ...

(IMG:http://www.sirandy.com/pix/914/work/006.jpg)
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Joe Ricard
post Jul 19 2004, 06:06 PM
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Hey Andy them are Stainless Steel No need to oil them to keep em from rusting (IMG:style_emoticons/default/laugh.gif)
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SirAndy
post Jul 19 2004, 06:57 PM
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QUOTE(Joe Ricard @ Jul 19 2004, 05:06 PM)
Hey Andy them are Stainless Steel No need to oil them to keep em from rusting (IMG:style_emoticons/default/laugh.gif)

ha ha, very funny ... (IMG:style_emoticons/default/biggrin.gif)

i didn't know they were SS SSI's until i cleaned them ...
(IMG:style_emoticons/default/icon8.gif) Andy
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jporsche914
post Jul 20 2004, 09:46 AM
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I think i might keep the SS heat exchangers and convert to a 2.0L exhaust. What exhaust would you guys recomend (bursch, Sebring, ect) i put on.
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SirAndy
post Jul 20 2004, 10:00 AM
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QUOTE(jporsche914 @ Jul 20 2004, 08:46 AM)
I think i might keep the SS heat exchangers and convert to a 2.0L exhaust. What exhaust would you guys recomend (bursch, Sebring, ect) i put on.

put on a bursch. the 2.0 will make your engine flow/breath much better.
plus, the SSI 2.0 is even bigger than the stock 2.0 ...

(IMG:style_emoticons/default/wink.gif) Andy
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SLITS
post Jul 20 2004, 10:04 AM
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The 2.0 is a larger diameter pipe and freeer flowing. To convert you would need a '73-'74 transmission exhaust hanger to make them work. Your 1.7/1.8 won't work (doesn't line up). As you already know, you will also need a different muffler - mounting flanges are different.

If you need a set of 1.7/1.8 SS, I have them and could do a trade. (IMG:style_emoticons/default/biggrin.gif)
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newdeal2
post Jul 20 2004, 05:55 PM
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Here it goes again...bad advice [from a local shop]. I picked up some 1.7 HE in SS for a song on eBay in perfect condition and swapped my 2.o Bursch for a 1.7. Is the decrease in "flow" all that noticable considering we are dealing with a wopping 95HP on the 2 liter?

Just tired of bad advice [not from this group mind you].
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jporsche914
post Jul 21 2004, 10:12 AM
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About how much horsepower should i expect from converting my stock 1.7L exhaust to 2.0L SS heat exchangers and a bursch exhaust.
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SLITS
post Jul 21 2004, 10:21 AM
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I have no dyno information. A SWAG would be 1 maybe 2 HP.
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jporsche914
post Jul 21 2004, 10:37 AM
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(IMG:style_emoticons/default/sad.gif) Thats it!! I was hoping i would get 3-4 HP. I am sure it will sound awsome anyway. Would the conversion be good for the engine since it can breath easier??
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SirAndy
post Jul 21 2004, 10:41 AM
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QUOTE(jporsche914 @ Jul 21 2004, 09:37 AM)
(IMG:style_emoticons/default/sad.gif) Thats it!! I was hoping i would get 3-4 HP. I am sure it will sound awsome anyway. Would the conversion be good for the engine since it can breath easier??

3-4 seems likely. that's a 5% increase in HP on a 80hp motor!

if nothing else, you'll have more heat now!
Andy
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