exhaust configuration

[fredc125]

Hi all, I'm about to take possession of a "fresh from the builder" type 4 engine. I believe it's a 2243 (66x104) with matched valves ,a performance cam and OEM cooling shroud. Going into sandrail. I need to purchase an exhaust system for it and question if my path is wise. I've located some 411/412 heater boxes (which I would strip down to be just manifolds) and I was thinking of using those with the empi dual exhaust system. Are there any reasons why I should not go this route? Trying to stay on budget but my next best option is to build my own exhaust or spend 3x the $ for a performance exhaust that fits. Any input would be greatly appreciated. Side note: If you do the oregon dunes (hauser, riley ranch, spinreel, boxcar) let me know. I would love to meet some new people to ride with. Thanks, Chris.

[Leatherneck]

Welcome to the dirt pile Chris, how about some pictures of said items. Lol we are a visual group here.

[fredc125]

Sure, this is the setup i'm thinking about buying (heater boxes and empi dual exhaust -2 pics). And then there's the european motorworks exhaust which is nice but $300 more (1 pic). https://dunebuggywarehouse.com/media/ca ... 83-0_2.jpg https://www.thesamba.com/vw/classifieds/pix/8422246.jpg http://www.europeanmotorworks.com/mm5/g ... 04-092.jpg

[fredc125]

Or I could build a copy of the euro pipes for about $100

[Ol'fogasaurus]

Hi all, I'm about to take possession of a "fresh from the builder" type 4 engine. I believe it's a 2243 (66x104) with matched valves ,a performance cam and OEM cooling shroud. Going into sandrail. I need to purchase an exhaust system for it and question if my path is wise. I've located some 411/412 heater boxes (which I would strip down to be just manifolds) and I was thinking of using those with the empi dual exhaust system. Are there any reasons why I should not go this route? Trying to stay on budget but my next best option is to build my own exhaust or spend 3x the $ for a performance exhaust that fits. Any input would be greatly appreciated. Side note: If you do the oregon dunes (hauser, riley ranch, spinreel, boxcar) let me know. I would love to meet some new people to ride with. Thanks, Chris.

Chris, I ride the Oregon dunes myself and use a "buggy" but there are "rails" in our group also.

If you are new to the dunes then: https://www.oregon.gov/oprd/ATV/docs/hb_laws_rules.pdf otherwise some opinions.

The exhaust system you show with the open top pointing up is going to get you in trouble; you need to have an exhaust silencer that will get you down to the 93 decible limit. They don't always have someone out there but occasionally you will see one. I have been circled when stopped on the ocean beach and ticketed for the off-road tabs. I have even had the Sherriff stop and talk to me when I was parked on the ocean beach while inspecting me. Members of our group have also been ticketed so be prepared. The two biggest jerk-etts are now gone (but still talked about) but I have heard one of the Rangers who runs at least one of the one of the fed campgrounds talk and he was also a jerk/controller.

Also, you need to keep the exhaust up a little and protect it from suspension travel smashing it into the sand.

If you are new to the dunes or haven't done it yet, don't forget to take the off-road license test (and carry your driver's license plus I think you now need true "off-road insurance" as the normal insurance you have doesn't work off-road . I carry it) and to get your yearly tab as they do check for the tab and, while I haven't been checked... yet, the off-road license they will look for.

Have fun as that is what it is supposed to happen (but keep an eye on eveything and everybody as they often are liniar thinkers).

Lee

[fredc125]

Thanks for the good advice. I've actually been running out there for about .... since i was a kid, I'm 50 now.. The off-road license test is only for quads and motorcycles. When the cops come after you , just gas it and be faster than your buddy's and it's all good.

[Ol'fogasaurus]

Thanks for the good advice. I've actually been running out there for about .... since i was a kid, I'm 50 now.. The off-road license test is only for quads and motorcycles. When the cops come after you , just gas it and be faster than your buddy's and it's all good.

I just looked it up again and apparently in 2014 things have changed (https://www.offroad-ed.com/) now its Classes 1 just and 111. I was in the last age group (I'm 78 now) required to have the test/card then was all classes of toys at that time.

By-the-way... its pretty hard to outrun a radio and they do have them. We occasionally see the law and ambulances that don't ride the dunes come traveling in.

Lee

Right now it is the Type 4 (side by sides) that have taken over from the quads that are so dangerous. I've seen kids that were way too young (Under 7 years of age which is the minimum for bikes) driving them.

[chuckput]

Chris,
Welcome. I too, am a Type 4 user. Mine is stuck in a Baja Bug (see Chuck's Baja Build). I might caution you of one of the drawbacks of the mighty VW Big Block - everything for the engine is more expensive when compared to the Type 1. Another exhaust option available to you comes from Tri-Mil.

tm3116ub_2.jpg

tm3116cc_2.jpg

In an off-road car IMHO you want your exhaust up and out of the way. The EMPI exhaust with the twin mufflers is designed to be used with a Bus or 411/412 and exit below a bumper.

When it comes right down to it, you use the exhaust system that you like the looks of, works in for your intended use, and fits your budget. Good luck and enjoy the ride.

[chuckput]

Another thing to look at before you start ordering exhaust parts. Type 4s came with two different styles of exhaust ports. Oval ports (the most common) and square ports.

[Ol'fogasaurus]

The one with the bend in it is going to take some of then noise out but not much. I think there will be options available for it that may not work as well as the exhaust facing more skywards.

I run a short turbo muffler but that is now old school. Do some checking around for options.

Lee

[chuckput]

With the U-Turn collector it is easy to add some type of silencer. I was able to add a small Flowmaster like this to mine (only 17-inches long and 4-inches in diameter).

flo-12512409_ml.jpg

[fredc125]

I was looking at those muffler systems but they all disclaim that I must have an upright shroud conversion kit or they won't fit. Are you finding something different? I'm just going to build an exhaust that fits where it needs to, and does what it's supposed to do. Shouldn't be rocket surgery. Or at least if it is rocket science... it won't be when I do it.

[fredc125]

Ol'fogasuarus....radios or not, they still gotta catch ya... Actually, I'm not nearly dumb enough to run from cops, ever. They should be treated with the utmost respect as 99.95% of them deserve it. We like to ride at night. It's so much safer and more fun in my opinion. We follow some basic rules that have kept us out of any bad incidents for many years. Knock on wood.

[Ol'fogasaurus]

What kind of rail are you running: e.g., a long back, short back, 2 passenger, 4 passenger or

014.JPG

DSCN0786 copy.jpg

one of the newer styles that look like 4 door sedans and can go either way . Are you swing or IRS, K&L or BJ.

DSCN0779 copy.jpg

This would be more of a short back design but I don't have a good pix of a long back traditional design.

A long back might be an exhaust problem for you depending.... Don't forget that if you can (and I don't remember if the Type 4s have motor mounts or not (I've never delt with them).

Lee

[chuckput]

I was looking at those muffler systems but they all disclaim that I must have an upright shroud conversion kit or they won't fit. Are you finding something different? I'm just going to build an exhaust that fits where it needs to, and does what it's supposed to do. Shouldn't be rocket surgery. Or at least if it is rocket science... it won't be when I do it.

You are correct, the Tri-Mil set-up does require an upright fan conversion (I have a Porsche 911 style fan shroud). If you do go ahead and build your own exhaust system I might suggest going to LowBugget.com and get a set of these billet flanges as a starting point:

IMG_20110627_103421-235x164.jpg