Home  |  Forums  |  914 Info  |  Blogs
 
914World.com - The fastest growing online 914 community!
 
Porsche, and the Porsche crest are registered trademarks of Dr. Ing. h.c. F. Porsche AG. This site is not affiliated with Porsche in any way.
Its only purpose is to provide an online forum for car enthusiasts. All other trademarks are property of their respective owners.
 

Welcome Guest ( Log In | Register )

 
 Reply to this topicStart new topic
> SSI Heat Exchanger Modification, Modify 1.7 HE to 2.0
t collins
post Aug 21 2008, 06:01 PM
Post #1


Advanced Member
****

Group: Members
Posts: 3,270
Joined: 21-March 06
From: Virginia
Member No.: 5,754
Region Association: None
Just curious if anyone here has ever converted a set of Stainless Steel Heat Exchangers over from 1.7 to 2.0 ? (IMG:style_emoticons/default/sawzall-smiley.gif) (IMG:style_emoticons/default/smash.gif) (IMG:style_emoticons/default/welder.gif)
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Cap'n Krusty
post Aug 21 2008, 06:03 PM
Post #2


Cap'n Krusty
**********

Group: Members
Posts: 10,794
Joined: 24-June 04
From: Santa Maria, CA
Member No.: 2,246
Region Association: Central California
Be mo' beta to just buy the muffler and the hanger ........................ The Cap'n
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
t collins
post Aug 21 2008, 06:26 PM
Post #3


Advanced Member
****

Group: Members
Posts: 3,270
Joined: 21-March 06
From: Virginia
Member No.: 5,754
Region Association: None
QUOTE(Cap'n Krusty @ Aug 21 2008, 04:03 PM) *

Be mo' beta to just buy the muffler and the hanger ........................ The Cap'n


But that would take all the challenge out of it....
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Rusty
post Aug 21 2008, 06:35 PM
Post #4


Wanted: Engine case GA003709
*****

Group: Admin
Posts: 7,941
Joined: 24-December 02
From: North Alabama
Member No.: 6
Region Association: Galt's Gulch
Same pipe diameter... do as the good Cap'n recommends. Why mess up a perfectly good set of SSIs? (IMG:style_emoticons/default/confused24.gif)
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
orange914
post Aug 21 2008, 06:36 PM
Post #5


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
what would that accomplish? the s/s 1.7 and 2.0's have the same i.d. is the 2.0 muffler less restrictive?

mike
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
r_towle
post Aug 21 2008, 07:13 PM
Post #6


Custom Member
***************

Group: Members
Posts: 24,577
Joined: 9-January 03
From: Taxachusetts
Member No.: 124
Region Association: North East States
QUOTE(t collins @ Aug 21 2008, 08:01 PM) *

Just curious if anyone here has ever converted a set of Stainless Steel Heat Exchangers over from 1.7 to 2.0 ? (IMG:style_emoticons/default/sawzall-smiley.gif) (IMG:style_emoticons/default/smash.gif) (IMG:style_emoticons/default/welder.gif)


All HE's fit on all Motors.
They bolt right to the heads.

2.0 liter HE's require 2.0 liter muffler and 2.0 liter muffler hanger.
1.7/1.8 HE's require 1.7/1.8 liter muffler and hanger.

That is the simplest setup of parts.
You might be able to take an aftermarket muffler and cut off the flanges and weld on the other type of flange to make it work, but the height of the exit of the HE's is different so the resulting height of the muffler will either hit the car, or hang to low.

Rich
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
JeffBowlsby
post Aug 21 2008, 07:21 PM
Post #7


914 Wiring Harnesses
*****

Group: Members
Posts: 8,510
Joined: 7-January 03
From: San Ramon CA
Member No.: 104
Region Association: None
I think he means that 1.7L SSIs are cheaper and more available to come by than the 2.0L units. So why not get the 1.7L units and modify the ends to receive a standard 2.0L muff? Been thinking the same myself but don't know if its possible or what is involved if it is. May be a simple mod, may not work at all depending on the configuration.

Who has both set-ups to compare?
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
r_towle
post Aug 21 2008, 07:25 PM
Post #8


Custom Member
***************

Group: Members
Posts: 24,577
Joined: 9-January 03
From: Taxachusetts
Member No.: 124
Region Association: North East States
The 2.0 liter muffler or an aftermarket muffler made for 2.0 HE's will not work...its will hit the trunk floor (at least it will make you remove the heat shield)
The 1.7 HE's swing up at the end, the 2.0 liter ones do not.

So, you need to buy the correct muffler for the HE or it wont fit.
Not to mention the fact that the flanges are different...but I am assuming you weld on new flanges...same issue will occur.

I have all of it here...tried, measured...NOPE
Rich
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
JeffBowlsby
post Aug 21 2008, 07:31 PM
Post #9


914 Wiring Harnesses
*****

Group: Members
Posts: 8,510
Joined: 7-January 03
From: San Ramon CA
Member No.: 104
Region Association: None
Not sure you get what he is asking for Rich. He is proposing to cut off the ends of 1.7L HEs and mod them to fit a 2.0L muff. Cut off the upturned pipe ends...add level pipes and correct flanges...Can it be done? Convert a 1.7L HE to work with a 2.0L muff. (IMG:style_emoticons/default/idea.gif)
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
orange914
post Aug 21 2008, 07:32 PM
Post #10


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
QUOTE(Jeff Bowlsby @ Aug 21 2008, 06:21 PM) *

I think he means that 1.7L SSIs are cheaper and more available to come by than the 2.0L units. So why not get the 1.7L units and modify the ends to receive a standard 2.0L muff? Been thinking the same myself but don't know if its possible or what is involved if it is. May be a simple mod, may not work at all depending on the configuration.

Who has both set-ups to compare?

i beleive the 2.0 spread is also different at the flanges (wider). i may be wrong
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
t collins
post Aug 21 2008, 07:48 PM
Post #11


Advanced Member
****

Group: Members
Posts: 3,270
Joined: 21-March 06
From: Virginia
Member No.: 5,754
Region Association: None
QUOTE(Jeff Bowlsby @ Aug 21 2008, 05:31 PM) *

Not sure you get what he is asking for Rich. He is proposing to cut off the ends of 1.7L HEs and mod them to fit a 2.0L muff. Cut off the upturned pipe ends...add level pipes and correct flanges...Can it be done? Convert a 1.7L HE to work with a 2.0L muff. (IMG:style_emoticons/default/idea.gif)


(IMG:style_emoticons/default/agree.gif) You hit the nail on the head
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Tom
post Aug 22 2008, 12:27 AM
Post #12


Advanced Member
****

Group: Members
Posts: 2,139
Joined: 21-August 05
From: Port Orchard, WA 98367
Member No.: 4,626
Region Association: None
Yep,
Did it for my 76 when I back fitted the exhaust. Bought a set of nice 1.7 SSHE's and had Dave at Triad modify them for me. I needed the 2.0's so I could use his muffler. I understand he now makes a muffler that fits 1.7's.
Tom
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Triaddave
post Aug 22 2008, 02:13 PM
Post #13


Member
**

Group: Members
Posts: 244
Joined: 31-December 03
From: olympia,wa
Member No.: 1,478
The modification can be done. I had no problem welding mild steel to stainless.Tom is correct, I now can build an exhaust for any 914 ever built including the 1.7,2.0. and the 75/76 cars and the 6. my best advice is to go with the exhaust that fits the heat exchangers.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
MartyYeoman
post Aug 22 2008, 02:31 PM
Post #14


Senior Member
***

Group: Members
Posts: 1,519
Joined: 19-June 03
From: San Ramon, CA
Member No.: 839
Region Association: Northern California
Anything can be done if you want it badly enough.

On my car, I took a a set if SSIs (with bad flanges)
and cut and modified them to exit as '75-'76 three
bolt units. Pictures are here in a previous post.
This gives me the benefits of SSIs and lets me
bolt up my original CAT muffler if necessary.

Dave, I'm glad you have expanded the Triad product line.
Any info on the 75/76 units?
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
KaptKaos
post Oct 1 2008, 11:52 PM
Post #15


Family
****

Group: Members
Posts: 4,009
Joined: 23-April 03
From: Near Wausau
Member No.: 607
Region Association: Upper MidWest
Is there any performance advantage to stainless HEs over regular?

Any advantage to 2.0 vs. 1.7/1.8?

I thought that all of the pipe interior dimension were the same. Is this true?

TIA
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
flippa
post Oct 2 2008, 10:05 AM
Post #16


Advanced Member
****

Group: Members
Posts: 3,177
Joined: 7-May 07
From: Boston, MA
Member No.: 7,720
Region Association: North East States
Jim Kelly posted a thread a while ago that outlined the differences in the system

http://www.914world.com/bbs2/index.php?sho...c=79247&hl=

I suppose it could be modified. Anything can be done, it is just a question of how much $$$$$$$.
User is online!Profile CardPM
Go to the top of the page
+Quote Post
mudfoot76
post Oct 2 2008, 01:36 PM
Post #17


Currently teenerless :-(
***

Group: Members
Posts: 946
Joined: 18-March 04
From: Carmel, IN
Member No.: 1,814
Region Association: None
QUOTE(KaptKaos @ Oct 2 2008, 01:52 AM) *

Is there any performance advantage to stainless HEs over regular?



From what I have seen and experienced (had OE HEs on my old 2L then upgraded to SSIs), I think the biggest advantage is the SSIs weight only about 50% of what the OEMs do. My highly tuned butt-dyno said there was a difference in car performance and I attribute it to overall decrease in vehicle weight.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
t collins
post Oct 2 2008, 05:53 PM
Post #18


Advanced Member
****

Group: Members
Posts: 3,270
Joined: 21-March 06
From: Virginia
Member No.: 5,754
Region Association: None
QUOTE(KaptKaos @ Oct 1 2008, 09:52 PM) *

Is there any performance advantage to stainless HEs over regular?

Any advantage to 2.0 vs. 1.7/1.8?

I thought that all of the pipe interior dimension were the same. Is this true?

TIA



I think you're correct the inside pipe dimensions are the same. My only reason to ever consider this modification was to be able to use the 1.7/1.8 SSI I have just sitting around collecting dust with the new 2.0L Bursch muffler I already have.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
jimkelly
post Oct 2 2008, 06:33 PM
Post #19


Delaware USA
****

Group: Members
Posts: 4,969
Joined: 5-August 04
From: Delaware, USA
Member No.: 2,460
Region Association: MidAtlantic Region
bam - find a set of steel 2.0 he's for now - jim
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
« Next Oldest · 914World Garage · Next Newest »
 

Reply to this topicStart new topic
1 User(s) are reading this topic (1 Guests and 0 Anonymous Users)
0 Members:

 

Display Mode: Standard · Switch to: Linear+ · Switch to: Outline

Track this topic · Email this topic · Print this topic · Subscribe to this forum

- Lo-Fi Version Time is now: 21st May 2024 - 07:42 AM
Invision Power Board v9.1.4 © 2024  IPS, Inc.
All rights reserved 914World.com © since 2002
914World.com is the fastest growing online 914 community!
We have it all, classifieds, events, forums, vendors, parts, autocross, racing, technical articles, events calendar, newsletter, restoration, gallery, archives, history and more for your Porsche 914 ...