Keister's 400X build - VIDEO - Page 8

[FastZ28]

Next question to one and all. What to do for a pipe..... New chromed out DG's are readily available on eBay. They are very loud and over $200, but what are my options for a 400X of this nature???

I would suggest a 400ex header made to fit and a HMF 400ex muffler. I think Flyin Bryan was doing the headers, or HRE. Maybe you should ask xrider on his pushing the limits 350x.

First post he says he got his from NOS_350X.
http://www.3wheelerworld.com/showthr...ing-the-Limits

[Swinger]

That frame is a thing of beauty!! Great job and will be waiting for more.

[userj8670]

Any updates??? I love all these 350x builds lately

[keister]

This build will be slow, meticulous, and correct. I am collecting parts and advice. Jason Hall gave me carb / jetting advice the other night. My IQ increases every time I talk trikes with him.

Tapper and Bob - It already has a 450R pipe now in 350 form. My headpipe is junk.
Next step: Call Flyin Bryan!

[tapper190]

not sure of the sizes, but I was looking at the early version of the xr500 head pipe. There is no flanges on them so you could machine new ones to fit the 350x exhaust ports. As I said, this is only a thought, no solid measurements to see if it would work, lol
Tapper

[keister]

It took about 4.5 hours total time to tear it down to the frame. Could have done it much quicker but I kept getting distracted by refreshing beverages. Special thanks to Rescue Ray for spearheading this teardown process. When it was complete, there was one small metric bolt picked off the floor and unaccounted for. Not too bad for a couple amateurs.
No I have 3 shelves full of 350X parts in baggies. Tonight the parts cleaning begins -- one Ziploc at a time.
Some pictures:

[ATC-Eric]

Love the frame! I will have to tackle my own complete rebuild maybe next year. Excited to watch things come together here.

[keister]

Ran into a slight snag the other night. This trike has had a case saver the entire 5 years I have owned it. I bet this hole was there the whole time.
Crisis averted. I was lucky enough to acquire a replacement cover.

[keister]

Here is two-thirds of the pipe I want to use. It is a cut down 450R pipe with some fancy custom welds courtesy of Flyin' Bryan. It is also spark arrestor compliant for riding in Michigan and other states that require that sort of thing. Still looking for a headpipe that I can mate up to this.

[keister]

Major news from this past weekend. I happened upon this crate motor - which I believe to be a 1986.

Now the big bore kit can sit on a new platform and I can shelf the OEM piston and cylinder (for now).

[tri-Z ripper]

nice score. going to be a nice heart for that beast

[keister]

But this leads to so many questions;

1. Can anyone tell by looking if this an 86? If so, I will need new electricals. I know the voltage regulators are different. Will I just need a different regulator? or entire wiring harness?

2. I still don't know if my big bore cylinder is 85 or 86. Garry Crum (my 400X advisor) told me there are differences that need to be accounted for, but I'm not sure how to tell what I have.

3. I will be using this stock carb and going way up on the main jet. Stock main says #138 in the manual. What size should I start with? Can anyone recommend a range of sizes to purchase (I presently have no spare jets). And will I need to mess with the pilot jet too, or should that be ok at stock size?

4. Any special tools I will need for this job? I have heard of a vavle spring compressor, and searched eBay for such an animal, but I see many brands, sizes, etc. Can anyone recommend the right tool that fits these exact springs (or ATC's in general)?

Thanks in advance for any insight.....

[ATC-Eric]

That engine is an 86, that I can say for sure. Why do you need a valve spring compressor? Plaining to do work on the head?

[atctim]

2. I still don't know if my big bore cylinder is 85 or 86. Garry Crum (my 400X advisor) told me there are differences that need to be accounted for, but I'm not sure how to tell what I have.

Unless you are going for complete authentics, which you are not because it's a 400, what matter does it make if the cylinder is 85 or 86? Both bolt up the same on the top and bottom sides. The difference is the cam chain tensioner - everything else is compatible. Not sure what the problem here is.........

I used a stock carb and went to I think 148 Main. I have a stock slow jet, and it is almost impossible to start this thing when it is hot now. I have a bunch of larger jets I got to re-jet mine - you can have what I don't use and we will jet it accordingly.

I know I made mention of a spring compressor, as when I did a 400EX head I used one from the auto side of things - I made it work. With 4 hands rather than 2, it won't be hard to put it back together without that tool. But also Eric is correct here, unless you are planning on going with a different cam and or valves. It's a brand new head - I'd say bolt on the 400 kit, tune it and be done.

[ATC-Eric]

The 86 cam chain tensioner will not fit inside an 85 tensioner hole. And you cannot use an 85 tensioner on 86 cases because of the crank case breather.