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914World.com _ 914World Garage _ 914-6 Heat Exchanger Availability
Posted by: seanery Jun 22 2012, 07:56 PM
Looking around for heat exchangers, it looks like Billy Boat is about it here in the US. Mittlemotor lists two different diameters but lists no manufacturer. It looks like GHL doesn't do Porsche stuff anymore?
*edit* added Hayward & Scott
BB - $2310 pr
MM - E 1469 each 
That's $1847 at today's exchange rate - each!! You will get a 19.5% discount if shipped to the US, however.
H&S GBP 1400 pr - they look most like factory exchangers
What else is available now?
That brings up another idea. What are the odds of buying Bursch headers and fabbing HE's and ceramic coating the whole lot?
Mittlemotor HEs
Billy Boat HEs
Bursch Headers
Hayward & Scott
Posted by: mepstein Jun 22 2012, 08:19 PM
Look up Hayward and scott. Not cheap but looks nice. Many people have talked about fabbing up their own but it rarely happens.
Posted by: sixnotfour Jun 22 2012, 08:29 PM
put a big alternator and go electric...thats my latest, love it.
http://dcthermal.com/brushess-cabin-heaters
Posted by: plays with cars Jun 22 2012, 08:54 PM
put a big alternator and go electric...thats my latest, love it.
http://dcthermal.com/brushess-cabin-heaters
What size are you running Jeff? Looks like they range from 220W to 600W.
Its low priority on my list of things needed to get the -6 back on the road, but I love driving on cool spring or fall days with the top off. Won't be too enjoyable w/o heat; although I am looking seriously at putting seat heaters in too.
Posted by: smj Jun 22 2012, 09:53 PM
I've got no heat in my -6, and was trying hard not to think about the cost of heat exchangers - though I'm glad they're still available. I'd been eyeing the heated seat inserts at Camp914, but an electric heater with enough umph to clear the windshield would still be a good idea... 
Posted by: pete-stevers Jun 22 2012, 09:55 PM
i have heard the bb and stainless versions.... are more for the thought ..than the heat....
Posted by: smj Jun 22 2012, 09:59 PM
Look up Hayward and scott. Not cheap but looks nice. Many people have talked about fabbing up their own but it rarely happens.
http://www.haywardandscott.com/porsche/914-6-performance-manifold-with-heat-exchangers.html
€1.400 w/o tax or shipping, or about US$1,760 for the pair at today's exchange rate. So depending on shipping and tax, maybe a better price than BB.
Posted by: ClayPerrine Jun 23 2012, 07:04 AM
Use these:
http://www.aircraftspruce.com/catalog/eppages/homebuildersheatmuffs.php
They bolt over the exhaust and turn a simple tube into a heat exchanger.
Posted by: mepstein Jun 23 2012, 07:35 AM
Use these:
http://www.aircraftspruce.com/catalog/eppages/homebuildersheatmuffs.php
They bolt over the exhaust and turn a simple tube into a heat exchanger.
It would be nice if someone tested them out. I have a feeling that 9 inches of coverage won't be enough to heat the interior to the temp I want
Posted by: seanery Jun 23 2012, 08:07 AM
http://www.ebay.com/itm/Porsche-914-6-Heat-Exchangers-/251087858458?pt=LH_DefaultDomain_0&hash=item3a7600ab1a#ht_500wt_1292 
Posted by: SLITS Jun 23 2012, 08:14 AM
I have a set of B&Bs. Will let you know how they work once we finish the conversion.
I have a couple of sets of mangy /6s ... they can be fixed, but they ain't pretty.
$4K is a new high. Last ones I saw were $2.2K
Posted by: seanery Jun 23 2012, 08:16 AM
Ron, the thing I've read about the BB is that the fit at the muffler (driver side?) is off a bit. I'd love to hear how they fit and function for you!
I do like the look of the Hayward & Scott.
Posted by: sean_v8_914 Jun 23 2012, 09:57 AM
what is the going price for original 914/6 heat exch that are in usable condition?
Posted by: seanery Jun 23 2012, 10:25 AM
AA has some a left one that needs work for about $450 on ebay.
Posted by: sean_v8_914 Jun 23 2012, 11:00 AM
they are better than that.
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Posted by: sean_v8_914 Jun 23 2012, 11:01 AM
...self lubricating
Posted by: sean_v8_914 Jun 23 2012, 11:03 AM
afraid of extinction, he has gone into self preservation mode.
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Posted by: sean_v8_914 Jun 23 2012, 11:05 AM
the pipe bends are groovy
Posted by: Steve Jun 23 2012, 11:14 AM
What sucks about original heat exchangers is that they measure 1 3/8" and taper to about 1 1/4 on the inside. Not optimal for a bigger motor. My 3.2 runs fine on them, but I know I am probably losing a bit of HP with them. I should be running 1 5/8"
Posted by: 9146986 Jun 23 2012, 11:18 AM
About 50% of the B&B's I've sold/bought had problems. I won't get them anymore, as it costs too much to round trip ship those things.
Heat exchangers of mild steel = future life insurance payout for your beneficiaries
Every set of factory 914-6 HE's I've ever seen have that same pitting as the spendy ones on eBay. And every set of 6 HE's that have come off a running car usually needs a little repair.
FWIW, the much storied carb'd 3.0 from Bruce Anderson's book, was a 914-6 with factory HE's. The factory HE's flow really well.
Posted by: seanery Jun 23 2012, 11:41 AM
So, what are you using on builds now, Perry?
Posted by: 6freak Jun 23 2012, 03:18 PM
. The factory HE's flow really well.
I have the BB`s on my stock 2.0 with heat ...they suck for heat(low air flow) and they where a real bitch to attach! ...i put them on for the bigger I.D with Triad muffler that had to be custom fit by Dave ,,the flange on the BB is not square with the back of the car they are angled in to each other ...this complete system will most likely be for sale soon .. 90 % sure im go n back to stock
Posted by: sean_v8_914 Jun 26 2012, 08:23 AM
who has cheap six headers?
Posted by: Steve Jun 26 2012, 08:24 AM
who has cheap six headers?
If we are talking new its pretty much Martin Schneider or Bursch.
Posted by: 9146986 Jun 26 2012, 10:39 AM
I haven't done any 6 conversions in a few years Sean, been wrapped up with other stuff.
Posted by: SLITS Jun 26 2012, 10:42 AM
what is the going price for original 914/6 heat exch that are in usable condition?
Depends upon what you consider useable .... I've bought them from $400 to $700, but each had it's own problems .... mainly repair of the clam shell surrounding the pipes. 18 gauge, ball peen hammer and a welder .................
Now, if I could just find a decent passenger side .. I would have 3 sets ...
Posted by: SirAndy Jun 26 2012, 10:53 AM
Get a set of headers and make your own heater boxes.
Whatever you do, do NOT weld the boxes to the headers ...
Posted by: JawjaPorsche Jun 26 2012, 11:03 AM
Here are some "cheap" ones on Ebay! Yikes!!
http://www.ebay.com/itm/Porsche-914-6-Heat-Exchangers-/251087858458?pt=LH_DefaultDomain_0&hash=item3a7600ab1a
Posted by: pete-stevers Jun 27 2012, 12:56 PM
it is too darn bad there is no one to tackle the job of building some hes that work, or a reproduction of orig...and do a decent job of it
what does a nos set of hes go for these days...iffin they can be had
Posted by: 6freak Jun 27 2012, 02:51 PM
Whatever you do, do NOT weld the boxes to the headers ...
why Andy? ...I thought that might help with the heating issue`s ,There`s hugh gaps .250 in place`s and i kinda wanted to try close n the gap`s to see if it would help
CO.2 in the cab from burn through maybe?
Posted by: jmill Jun 27 2012, 03:30 PM
Crack kills. Welding opens up the potential for cracks .
Posted by: SirAndy Jun 27 2012, 04:25 PM
You die only once ...
Posted by: SLITS Jun 27 2012, 04:49 PM
You die only once ...
Not according to Bond, James Bond!
Posted by: patssle Jun 27 2012, 04:51 PM
Use these:
http://www.aircraftspruce.com/catalog/eppages/homebuildersheatmuffs.php
They bolt over the exhaust and turn a simple tube into a heat exchanger.
I've seen these mentioned several times (on Pelican too) - but nobody with actual results posted.
I have an idea of building a A/C system that has swappable hoses - take the air off the condenser in the winter and the evaporator coils in the summer. Just an idea for now.
Posted by: 6freak Jun 27 2012, 10:06 PM
Crack kills. Welding opens up the potential for cracks .
thats what i figured...
Posted by: a914622 Jun 27 2012, 10:37 PM
So does anyone know of a shop that would or does mandrel bend the pipes? A make your own option is cool, but i wouldnt want to do it from a box of U bends.
I called MSDS to see if i could buy just the bent pipe and build my own for the svx swap. I got the "never going to happen" story. told me to call jegs and get a box of U pipe.
jcl
Posted by: horizontally-opposed Jun 28 2012, 05:02 PM
I'm sure I'll get a 
for this, but John over at SSI apparently did all the work to put them into production but never did.
I wonder if a big enough group buy would get him there. It's a big if...
I'll be in the market soon, and frankly don't love any of the choices.
pete
Posted by: seanery Jun 28 2012, 09:38 PM
I'm sure I'll get a
for this, but John over at SSI apparently did all the work to put them into production but never did. I wonder if a big enough group buy would get him there.
It's a big if...I'll be in the market soon, and frankly don't love any of the choices.
pete
Pete,
I'd be VERY interested in some SSIs!!
Posted by: SirAndy Jun 28 2012, 10:11 PM
It's a big if...Knowing John, i give this a 0.5% chance ...
Posted by: ClayPerrine Jun 29 2012, 11:24 AM
I'm sure I'll get a
for this, but John over at SSI apparently did all the work to put them into production but never did. I wonder if a big enough group buy would get him there.
It's a big if...I'll be in the market soon, and frankly don't love any of the choices.
pete
That will never happen. The owner of SSI said he would never make another part for a 914 after the Voldermort of the 914 community screwed him over.
Posted by: 6freak Jun 29 2012, 11:39 AM
Use these:
http://www.aircraftspruce.com/catalog/eppages/homebuildersheatmuffs.php
They bolt over the exhaust and turn a simple tube into a heat exchanger.
I've seen these mentioned several times (on Pelican too) - but nobody with actual results posted.
I have an idea of building a A/C system that has swappable hoses - take the air off the condenser in the winter and the evaporator coils in the summer. Just an idea for now.
if i only had 12" of strait pipe i might try these...prolly spendy to! because its for an airplane....just looked they have a 6.5 inch for 126.95....253.90 for a pair ....much cheaper then i expected ....im gonna be do n some measureing to nite for sure
Posted by: smj Jul 1 2012, 03:43 AM
I've definitely got enough straight pipe in one header on either side for the 6.5", not sure about the 9". But the photo for the 6.5" shows the inlet and outlet ports are not in-plane the way they are for the 9" version shown in this thread. Have to get further under the car with a tape measure tomorrow...
Also, the site may be a little screwy, but it's giving me the same $126.95 price for either size/version.
Posted by: DEC Jul 1 2012, 04:50 AM
The SSI's for the -4 are now available again.
Mittelmotor, Stoeckl and other German vendors have them
http://www.mittelmotor.de/content/news/activenews_view.asp?articleID=72
So I hope it is possible to get the SSI's for the -6 in the future.
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