My first quad build Trx250r

14641 Views 255 Replies 12 Participants Last post by bushwesl, 3 mo ago

Jeepster

Discussion Starter · Sep 30, 2021

5

New to the forum and will be building my first quad to use as a backup bike / all around play bike for the desert, mountains and sand-dunes for the wife and I. I currently ride a Ktm 300xc and wife rides a kx100 and it’s not ideal to use in sand not enough torque, small wheels and short wheel base. A week ago I picked up 2 86trx250rs pretty much complete. One with a hacked up frame and blown motor and one with an ok frame and running motor.
Running motor had 180psi compression and leak down test was performed. The jugs Base gasket had a small leak so after removal it appeared the piston had signs of a slight cold seize at one point in its life. End goal is to have an easy and comfortable bike to ride with a broad power band. So I stripped the good frame and found some repairs to make after it gets sand blasted.

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kellmx147

· #81 · 11 mo ago

Looking good, staring to come together.

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Jeepster

Discussion Starter · #82 · 11 mo ago

kellmx147 said:
Looking good, staring to come together.

Do you have any idea what brand of air box lid I have? (It came with the other 250r I bought)

kellmx147

· #83 · 11 mo ago (Edited)

Outerwear’s would be my guess by I’m sure there were some others made.
I remember a buddy of mine had one years ago, his was made by Protec.

bushwesl

· #84 · 11 mo ago

The airbox lid you have is made by Shaun McKee. It’s a great piece. I have the black on black version. I know he had a large batch made up a while back, but I’m not sure if he has any left or is planning on doing another round.

As for the linkage guard, I don’t think I’ve ever seen one for the 250R.

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Jeepster

Discussion Starter · #85 · 11 mo ago

bushwesl said:
The airbox lid you have is made by Shaun McKee. It’s a great piece. I have the black on black version. I know he had a large batch made up a while back, but I’m not sure if he has any left or is planning on doing another round.

As for the linkage guard, I don’t think I’ve ever seen one for the 250R.

Cool man thanks. So I’d pretty much be stuck on a full swing arm skid. Any recommendations on a good one? Thought of making one but I don’t have a tig welder

bushwesl

· #86 · 11 mo ago

Jeepster said:
Cool man thanks. So I’d pretty much be stuck on a full swing arm skid. Any recommendations on a good one? Thought of making one but I don’t have a tig welder

Unfortunately, yes.

The best, IMO, would be a skid from Dan at Pro-tect Fabrications - 317-467-1701. However, I’m unsure if he’s still making them anymore. Outside of that, XFR, Moose, etc. are available last I checked on eBay and other retailers.

What year frame and swingarm are you running? If OEM, I have a couple variants of the XFR skid that I’d sell. I bought them for an LSR swingarm that I didn’t end up using because they didn’t fit right. I would assume they’d fit the OEM swingarm just fine.

Note that you’re not going to be able to use a skid plate with the BVC chain/sprocket guard, at least not without modification. An alternative to the skid is to add a Hess brake rotor guard in combination with your BVC guard. The Hess unit is a really nice piece, and the two together would provide great protection. This still leaves your linkgage exposed, though.

Cold Slither

· #87 · 11 mo ago

I was going to say AC but they don't make skids anymore apparently.

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Jeepster

Discussion Starter · #88 · 11 mo ago

bushwesl said:
Unfortunately, yes.

The best, IMO, would be a skid from Dan at Pro-tect Fabrications - 317-467-1701. However, I’m unsure if he’s still making them anymore. Outside of that, XFR, Moose, etc. are available last I checked on eBay and other retailers.

What year frame and swingarm are you running? If OEM, I have a couple variants of the XFR skid that I’d sell. I bought them for an LSR swingarm that I didn’t end up using because they didn’t fit right. I would assume they’d fit the OEM swingarm just fine.

Note that you’re not going to be able to use a skid plate with the BVC chain/sprocket guard, at least not without modification. An alternative to the skid is to add a Hess brake rotor guard in combination with your BVC guard. The Hess unit is a really nice piece, and the two together would provide great protection. This still leaves your linkgage exposed, though.

I have an 86 frame and swing arm. After I realized I ordered the sprocket gaurd i realized most skids cover the sprocket anyway Oops oh well I can modify a skid. I’ll look into those

Jeepster

Discussion Starter · #89 · 10 mo ago

4

Well I think I have the rear axle and brakes all done. I sent out my cases to BDT for repair and talked to Carlos about a +4 stroker so I’ll probably go that route also got my tires in today and waiting on the wheels to show up.

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Jeepster

Discussion Starter · #90 · 10 mo ago

I got my seat pan to fit better with a heat gun but I went slightly to far but that’s ok I’ll Adjust it more.

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scrappy

· #91 · 10 mo ago

Hold off on adjusting the seat pan. When the cover is put on & stretched it will probably pull it back to the perfect spot

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Jeepster

Discussion Starter · #92 · 10 mo ago

scrappy said:
Hold off on adjusting the seat pan. When the cover is put on & stretched it will probably pull it back to the perfect spot

Good point I was thinking of that too

Jeepster

Discussion Starter · #93 · 10 mo ago

4

Well I went with GPS carbon bead locks 9x9 rear wheel on 20” tire, front 4/1 offset on 22s. I got rear dual beed locks only because they were out of singles and had no idea when they would be in. Front and rear width sits at about 46inches right now.

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scrappy

· #94 · 10 mo ago

Looking good.... One of the front tires is mounted backwards

Jeepster

Discussion Starter · #95 · 10 mo ago

scrappy said:
Looking good.... One of the front tires is mounted backwards

Haha wow I just saw that the tread direction is not the same. I was looking all over for a direction on tire and didn’t see one so I just mounted it. I wonder what direction they need to go? I mounted both with the green line around the tire facing out and the ugly whit bar tag on the inside of both tires…

Jeepster

Discussion Starter · #96 · 10 mo ago

2

I purchased the new DRW zeelctronic ignition it’s a plug and play system 200watts. Has stock mapping and a cr map. Also programable via PC with with a cable sold separately. I will be replacing reeds, sealing exhaust , installing a new coil on the other bike I have and jetting it once it’s running perfect I will swap ignitions for a comparison and update.

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scrappy

· #97 · 10 mo ago

Nice! Thats the best ignition on the market.

Cold Slither

· #98 · 10 mo ago

RZ350 people love Zeels but they don't have as much of a following here. Not sure why. Is the CR map a new addition? That might make them more popular here. I guess you still don't get the smaller flywheel. Maybe that's it.

Jeepster

Discussion Starter · #99 · 10 mo ago

Cold Slither said:
RZ350 people love Zeels but they don't have as much of a following here. Not sure why. Is the CR map a new addition? That might make them more popular here. I guess you still don't get the smaller flywheel. Maybe that's it.

So this is all new just came out last week. For what I want I don’t want the smaller flywheel I’d rather have the better low rpm luggable engine and slightly less of a hit for the loose hard pack desert and Rocky trails but I can see where other ppl might want less flywheel weight to. Also the fact that I will be running lights, battery and possibly a small fan. I will be doing an update on what I think of it here very soon as long as I get my other motor running perfect so it will be a fair comparison to OEM.

Jeepster

Discussion Starter · #100 · 10 mo ago

scrappy said:
Nice! Thats the best ignition on the market.

Well I hope it’s as good as the company is making it out to be haha

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