Talk Morgan Forums Morgan Sports Cars Morgan Three Wheeler & Super 3 Crossover for M3W

Hi Andy,

Both manifolds are stock. The pipes and tailpipes had been upgraded to Stage 3 by the previous owner and were completely open along their entire length (massively oversized). They were very loud, with a whip-like noise on the overrun—very unpleasant. With the crossover this negative effect is almost gone. Crossover makes sense for both stock and straight-through pipe system. This crossover can be easily removed for engine maintenance. Crossover diameter is 38 mm.

Cheers Klaus

Something like this one?:

It's on off the shelf custom unit from S&S for the X-Wedge. I've since had mine powder coated black.

Thank you Steve, this looks terrific! Where did you buy this?

It was on the car when I purchased it. At one time these were fairly easy to find in the U.S. but I just did a quick search and can't seem to find one. It might be worth checking with the larger Harley component suppliers or one of custom bike builders that previously used the X-Wedge like Big Dog Cycle or Combat Motors to see what they may have.

The three hole pattern on the throttle body is the same as some of the Harley Davidson models with the same throttle body diameter, and I see many similar air cleaners for H-D but the two mounting points on the cylinder heads for the air cleaner backing plate are wider on the X-Wedge engine. Summary: H-D filter elements and various top covers are readily available, it's the backplate that is unique to the X-Wedge. Note that the correct backplate is needed as said backplate is part of the mounting for the throttle body.

Apologies for getting you excited about something that may be unobtainable

An edit: After looking at my car, I was reminded that the air cleaner has two metal mounting ears or extenders, that fasten to what is highly likely to be a H-D spec filter assembly thereby adapting it to the X-Wedge motor. The air cleaner assembly is known as an S&S Steath air cleaner, and they separately sell decorative covers to suit your preferred style.

Here is a detail photo of the mounting ear:

Maybe this is interesting for you and available in de EU

A lot of choices and brackets to fit

Zodiac

A lot of choices of brackets and backplates but none of them listed for the X-Wedge as far as I can see. Probably not too difficult to adapt another engine bracket to fit though but a shame you can no longer get an "off the shelf" X-Wedge filter now.

Kudos on that X-exhaust—it’s perfectly integrated into the engine design; it’s a brilliant idea
It makes me want to buy an MTW to go along with my Plus Four for new three-wheeled adventures
As for the air filter, I had this one custom-made, based on the original filter :

Amazing how X-wedge accessories have just disappeared!
There is always the Garage 56 filter cover which presumably one could paint to taste?

This is the S&S Stealth air filter with the Muscle Cover. The Stealth Air filter can still be purchased at the S&S webpage, but the Muscle Cover, which is the chromed dish with the SS cables and lockpins is not available anymore. And for a few years now, which makes it really difficult to find a "forgotten" one on the shelves of any shop....

https://www.speedymarmots.com/hangar-works-9-change-of-air-intake-kit/