Type 4 conversion exhaust in splitty

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milehighpuma
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Type 4 conversion exhaust in splitty

Post by milehighpuma » Sat Jul 15, 2017 10:11 pm

I am doing a type 4 conversion for my 65 DC and wanted to see if anyone has fit a stock 73-74 bay window bus muffler into a splitty without modifying the stock sheet metal. Would like feedback as to what worked without being much louder than stock or hanging too low, will be for a stock height vehicle.
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Bruce.m
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Re: Type 4 conversion exhaust in splitty

Post by Bruce.m » Sun Jul 16, 2017 2:40 am

Can't help with your question but nice work on the conversion. The tin looks great. Your own stand too?

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sideshow
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Re: Type 4 conversion exhaust in splitty

Post by sideshow » Sun Jul 16, 2017 9:31 am

Very nice conversion, but the first thing that comes to mind it those things are wide. I'm skeptical that would fit between the bumper bracket.

FWIW When I did my truck I used the old raby econo header that I cut back (well forward) and had to use “U” bend to clear my hitch/bumper brackets and used tiny mufflers.
Yeah some may call it overkill, but you can't have too much overkill.

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Piledriver
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Re: Type 4 conversion exhaust in splitty

Post by Piledriver » Sun Jul 16, 2017 1:50 pm

That isn't much room... Almost calls for an "under the transmission" setup.

A 914 tube exhaust like a bursch or Sebring tucks in nice in the middle, and might even fit with factory T4 HX, but it would need modded for muffler clearance.
The Bursch secondary collector points to the right, you could bring that over an run th mufler near the right valve cover.

I have my motor out at the moment for other work, can get measurements if you'd like.
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wreck
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Re: Type 4 conversion exhaust in splitty

Post by wreck » Sun Jul 16, 2017 4:57 pm

IMG_0060.JPG

This might give you some ideas.The exhaust goes back around the engine with 2 mufflers and a resinator , the note is nice and quiet . Turbo Thomas make a header that should fit ,also CSP . The standard muffler is too restrictive for a modified engine .
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bushoarder
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Re: Type 4 conversion exhaust in splitty

Post by bushoarder » Sun Jul 16, 2017 5:28 pm

That's an interesting conversion... what fan is that? Is the engine bar a t25?


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Piledriver
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Re: Type 4 conversion exhaust in splitty

Post by Piledriver » Sun Jul 16, 2017 7:07 pm

Std Bay bus bar for T4 setups, the WBX vanagon one would get in the way of most exhaust setups.

I'm somewhat reworking my setup at the moment (in a T3) to clear a CB dry sump pump, but heres a picture of the old setup, its largely same design, I just changed over to 914 center mounts as they are stronger... Also have late Vanagon mounts added
Second pic is of a modded setup, the EMW headpipes would be a bit shorter on an upright conversion, these had just been tacked ... extended HX pipes to clear the stock fan housing with the Bursch.

I run a Mk1 Golf oil filter to clear the Vanagon mounts.
Vanagon-busmounts.jpg
T3Bursch.JPG
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sideshow
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Re: Type 4 conversion exhaust in splitty

Post by sideshow » Sun Jul 16, 2017 8:26 pm

Bay windows != Split
Not even close...not a clue what a wedge ass is in width but I'll bet its wider than yours. I've made that mistake before.

No idea what than fan is from either, Pinzgauer? I wouldn't use a radiator fan to force air over an engine...then mount it facing the wrong direction.
Yeah some may call it overkill, but you can't have too much overkill.

milehighpuma
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Re: Type 4 conversion exhaust in splitty

Post by milehighpuma » Sun Jul 16, 2017 10:05 pm

Thanks for the ideas. I have never seen the inside of a stock muffler, maybe possible to purchase a new one and narrow it a bit to fit between the bumper brackets if they are in the way.

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Piledriver
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Re: Type 4 conversion exhaust in splitty

Post by Piledriver » Mon Jul 17, 2017 1:12 am

sideshow wrote:
Sun Jul 16, 2017 8:26 pm
Bay windows != Split
Not even close...not a clue what a wedge ass is in width but I'll bet its wider than yours. I've made that mistake before.

No idea what than fan is from either, Pinzgauer? I wouldn't use a radiator fan to force air over an engine...then mount it facing the wrong direction.
I was only answering where the cross bar came from, and showed what I did with it.
You could probably narrow it (and the muffler) for a split, easily, but it will cost you some power and run hotter vs a decent exhaust. Mild engine only (but it IS in a bus, a hand grenade would be unlikely to live long anyway)

It looks like Wrecks mystery fan turns the right way.

That's a Sharpbuilt fan housing setup from Oz, although I don't recall what the fan is from.
The Porsche fans actually move too much air (overcools) so it might even work well.
He drives it, pushing a Bus, so I'm curious what it is myself.
If it was badly borken the engine would have died a quick and violent death, so I want to know more about Wrecks setup..
Have a thread with more info on that, Wreck?
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wreck
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Re: Type 4 conversion exhaust in splitty

Post by wreck » Mon Jul 17, 2017 3:58 am

The fan was off a diesel boat engine used on a river ferry so I was told . It's was mounted to 120 amp Toyota alt. in a fabricated housing made from a cut down Mercedes wheel rim. reason being that when it was done the going price for a Porsche fan assy. was over $2000 second hand in Australia .

The fan cools better then a 12 blade Porsche 964 fan ,( MGL TC-1 CHT gauge to back that claim up) an alternator mounting bracket broke after 15 years as a daily driver damaging the fan so it now has the Porsche fan fitted . I run a big bottom pulley to spin the Porsche fan at 2 to 1 during Summer to get the same cooling . Must admit the Porsche fan looks a lot better , I don't have a photo small enough to post it .
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Piledriver
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Re: Type 4 conversion exhaust in splitty

Post by Piledriver » Mon Jul 17, 2017 5:03 pm

I'm thinking something like Deutz diesel for the ferry.... ~Nothing watercooled is likely to have a fan like that.
(Note that when you look at a Deutz 90x what you see on the outside is NOT the fan, its the support.)
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sideshow
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Re: Type 4 conversion exhaust in splitty

Post by sideshow » Mon Jul 17, 2017 7:10 pm

By wrong direction I mean pointing the fan inlet opposite of the high pressure area in front of the vehicle. If that is off a boat/diesel application it may work well without pseudo ram air most cooling systems expect.
Yeah some may call it overkill, but you can't have too much overkill.

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