Best FPHE ? recommendations ?? Flat Plate Heat Exchanger (FPHE) - Page 2 - PeachParts Mercedes-Benz Forum

BenzDieselTuner · #16 03-23-2013, 09:19 PM

when i installed my new 30 plate fphe this afternoon, both heater hoses, feed and return, on my 1980 240 D, were 3/4 and not 5/8 as "everyone" always says on the forums.....i had to run all over town and find 5/8 to 3/4 hose adapters to make it work on the fly with the hardware i had ordered from around ebay......it works perfectly now, and is extremely heavy and u can tell its well made....and my wvo is burning hot as well as my heat in the car

cost 80 bucks plus tax and shipping, from a company called WVO Designs.....i would recommend them....

http://www.peachparts.com/shopforum/attachments/alternative-fuels/110318d1364085718-install-oe-bosch-style-prefilter-after-30-plate-heat-exchanger-30-plate-heat-exchanger.jpg

http://www.ebay.com/itm/281058565816?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1497.l2649

bmor_62 · #17 03-23-2013, 10:28 PM

I want to hook up the coolant return line just before my water pump, but the only hose I see going into the pump is a large 2" radiator type hose. Am I missing something here?
I am currently returning the coolant just after the pump but I hear this is not ideal as the pump pushes better than it pulls.
I got mine from Omar Sales, it seems to be a quality piece.

BenzDieselTuner · #18 03-24-2013, 07:49 AM

ill take some pics this afternoon to show you....

bmor_62 · #19 03-24-2013, 10:52 AM

Quote:

Originally Posted by wilburtual

i think im gonna go with a 20 plate from dudadiesel... now i'm wondering if i understand correctly where to plumb it in... i (THINK) it goes like how i have it marked in the photo below, tap in behind the head to go to FPHE and output of FPHE taps in after heater core before the metal pipe that goes to the water pump...
is that right??
there is also a short hose after the metal return pipe right before the water pump, is there any advantage to tapping in there instead?
are my "flow arrows" on the heater hose correct in how the coolant flows in the system?

Is this the way to go? Again I have been told just before the water pump is a good place to return coolant to.

BenzDieselTuner · #20 03-24-2013, 12:18 PM

u have to take the air cleaner off to see it......see the metal tube that the short hose u have marked, coming out of the heater, goes into ? on the other end of that tube, there is a hose, which connects it to the water pump housing (at the return) look under the air cleaner.... this is where u want to put your T fitting for the water return....i will make pictures of my new setup later and post them so u get an idea.....keep in mind, its not "neat" (all perfect like it looks like it came that way from the factory), but it is all very heavy duty, and does its job !

(im talking about my setup i put together on the cheap and assembled in an hour)

BenzDieselTuner · #21 03-27-2013, 11:16 AM

here are the photos, sorry i'm late, i was busy.....

BenzDieselTuner · #22 03-27-2013, 11:20 AM

last pic, 'caus of the 5 pic max rule....

keep in mind i havent finished up the job, like wire the electric pump into the switched 12 volt circuit (the same as the one for the auxilary fan), change the routing of the pump, prefilters, and such, etc.....at least my wvo is hot now....i also will eventually change the rouing of the coolant lines as well, the only reason they are as they are is i didnt order enough hose, so i had to make do with what i had, and some stuff is too short or routed wrong, to make it work with the 12 feet i had....

bmor_62 · #23 10-18-2013, 01:48 PM

Here is the result of my labour. Now to wrap it in some insulating foil. A 90 degree elbow would be the ticket to fix the elongated curve in the hose in picture 1. There is also a bypass valve in picture 1 just after the tee.

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