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Author Topic: My rescued 86 TRX250R build  (Read 11723 times)

Offline nick20555

My rescued 86 TRX250R build
« on: June 23, 2017, 12:21:13 PM »
The reason for the "rescued" part of the title on this build thread is because this poor R has not been treated well so I feel like its when you rescue a dog from an animal shelter.

First off this is an 86 TRX250R. I've always been a 2 stroke fan and rode my dad's blaster since I was tall enough to reach the handlebars and shifter. Since then I've always been about 2 strokes and a few years ago, got my own blaster to build faster than my dad's. It turned out real good and I love the 240 big bore with a +3 stroke crank but I've always dreamed of having a 250R. I feel like the 250R is every 2 stroke fan's dream quad if you like a well rounded quad. Banshees have a big fan base but I personally like the 250R for its history of racing and its well roundedness.

Well I finally found one at a great price because it wasn't in great condition which is what I wanted because I like rebuilding them and making them to my riding and liking. The plastics are really rough and its got some goofy paint scheme going on. The guy I got it from didn't know much about it either and obviously didn't care to much to keep it in good shape. It had a huge crack in the exhaust and the carb bowl was cracked so bad that when I unscrewed it, it shattered in my hand. The clip on the needle was even bent and straddling about 3 notches on the needle. Chain also had zero sliders, guides, or rollers. It also had an aftermarket CDI which I was told and believe is the reason it had the ankle breaking kick back when trying to start. The swing arm bolt was missing the nut. The air filter was filthy. It even only had one grip on the handle bars.

Here's some pictures of it and last one sitting next to my blaster I mentioned above.

Offline nick20555

Re: My rescued 86 TRX250R build
« Reply #1 on: June 23, 2017, 12:26:12 PM »
I only tinkered with a few little things on it here and there when I got it. After a year since I last messed with it, I finally started working on the R again. Not too much physical progress yet but a lot of thinking and planning got done recently.

After finding problem after problem with the quad and the condition it is in, the previous owner(s) must not have cared too much to keep it reliable and in good shape. Because of this, I decided its best to just tear it all down and have the motor rebuilt even though it technically runs just not the greatest.

I took the motor out and the attached pictures is how it sits now in my messy garage.

The motor has been shipped out to BDT to have work done. When the motor arrived, Carlos convinced me to go big with a 363 build. It wasn't much more money than just a rebuild and the work I wanted and he said he sees time and time again, people sending motors back cuz they want a bigger build. Since I know I will probably be one of those guys too, I decided why not spend a little more money now and save more in the long run by having him go ahead and build the big bore now. He's also going to powder the cases and covers black and leave the cylinder and head glass beaded so it looks bare aluminum. It will look better in my opinion with the color scheme I'm going for. So that's whats in the works now. I'll try to keep you guys posted when it comes back in about 4-6 weeks.

Now I'm just planning on what else I want to do with it until the motor gets done. I've already purchased the big bore pipe for it and a 38mm air stryker for it. Also, I went ahead and pulled the trigger on a great deal on a +1/+4 axle. I got my electrical components on the way to hopefully fix the kickback issue the quad had before I tore it down.

I've already talked to my suspension guy to figure out what to do with the shocks. He said he can build me whatever to match the arms I buy so I just need to figure out what arms I want and he will build the shocks for them. So I'm currently doing some research so I can decide on what long travels I want. ASR builds some long travels at a decent price. Alba makes some long travels at an even lower price for the 400ex which apparently fit 250Rs too as long as you put spacers in where it bolts to the frame. But everyone I've talked to really recommend the JD performance arms but they are a good $300 more than the ASRs and even more than the Albas. It's a tough decision and one I'm still debating.

This weekend I plan on trying to make more progress toward stripping the rest down to bare frame so I can get going on having the frame gusseted and then powder coat afterwards. I'm going to powder coat the frame a deep red like my 04 blaster frame. I really like that color and the powder comes out REALLY good and super glossy. I'll probably do just the frame red and the swing arm, axle, and arms black. I have black wheels to go with it. I'm also thinking about the black carbon fiber looking race cut fenders for it. I really think the black/silver looking plastics matched with a red frame and black arms and stuff will really look good. It's a way to keep the silver/black theme but still have a subtle but eye catching red frame.

Anyways, that's what has been going on the past couple weeks with my R. This next month can't go by fast enough! I really want my motor back so I can ride this thing!

Offline Sand_Blaster

Re: My rescued 86 TRX250R build
« Reply #2 on: June 23, 2017, 01:44:09 PM »
Good to see your reviving the R. It's really sad how people really abuse these quads and trash them. For the suspension arms, if you want quality, JD would be the way to go. I have Alba aarms on my banshee, they are decent but lack quality I'd get with higher end companies.
87 Trx250r & 99 Banshee

Offline nick20555

Re: My rescued 86 TRX250R build
« Reply #3 on: June 23, 2017, 04:19:38 PM »
Good to see your reviving the R. It's really sad how people really abuse these quads and trash them. For the suspension arms, if you want quality, JD would be the way to go. I have Alba aarms on my banshee, they are decent but lack quality I'd get with higher end companies.

I think I've decided against the albas. Now its between the ASR and JD. Its a matter of are the JD worth spending that much more for.

Offline Skeans1

Re: My rescued 86 TRX250R build
« Reply #4 on: June 23, 2017, 09:17:39 PM »
Good to see your reviving the R. It's really sad how people really abuse these quads and trash them. For the suspension arms, if you want quality, JD would be the way to go. I have Alba aarms on my banshee, they are decent but lack quality I'd get with higher end companies.

I think I've decided against the albas. Now its between the ASR and JD. Its a matter of are the JD worth spending that much more for.
Another good option is Tyler at Metaltech or Fireball or Stellar

Offline nick20555

Re: My rescued 86 TRX250R build
« Reply #5 on: June 23, 2017, 10:07:58 PM »
Good to see your reviving the R. It's really sad how people really abuse these quads and trash them. For the suspension arms, if you want quality, JD would be the way to go. I have Alba aarms on my banshee, they are decent but lack quality I'd get with higher end companies.

I think I've decided against the albas. Now its between the ASR and JD. Its a matter of are the JD worth spending that much more for.
Another good option is Tyler at Metaltech or Fireball or Stellar

Don't give me more options. It's already hard enough to decide between those two lol

Offline broken1

Re: My rescued 86 TRX250R build
« Reply #6 on: June 24, 2017, 12:48:44 AM »
As with most things you usually get what you pay for so my money would be on JD arm's or maybe try to find a used set of Laeger arms.

Offline nick20555

Re: My rescued 86 TRX250R build
« Reply #7 on: June 26, 2017, 11:10:09 AM »
Just a little more progress on the R tear down. The spare blaster I'm rebuilding so I can sell is taking up most of my time but still put in about an hour on the R. Down to pretty much just the brake lines, arms, and swing arm until the frame is ready. I'll work on the swing arm and the axle while the frame is getting done. Don't mind my messy garage. It's only that way because I gotta make room until I can get some stuff sold. Soon, the R will be moved to my primary project spot by the workbench and toolbox.

Offline croat1

Re: My rescued 86 TRX250R build
« Reply #8 on: August 04, 2017, 02:20:38 AM »
any updates?

Joe
A few Laegers
1987 oem
2025 Yamaha Raptor 700R
Mission: Back to Basics.  On the trail or dune

Offline nick20555

Re: My rescued 86 TRX250R build
« Reply #9 on: August 04, 2017, 09:02:54 AM »
Yes actually! I forgot to update this thread.

Last you guys saw, I was still tearing it down. Tear down was a B**** but I got it done. Had some delays in powder coating at work but that got done as well with outstanding results. Our powder coating guy at work does a fantastic job.

I have only made slow progress on the build back up as I'm still waiting on a good amount of the parts to get made (motor work, arms, shocks, nerf bars, bumpers, etc). I do have the swingarm and the rest of the rear end complete (minus the shock and rear brakes) with powder coating on everything like the swingarm and durablue axle, a nice new LSR billet carrier, tusk rotor, and new sprocket.

I have now started to work on the front of the quad as the JD Performance MGC arms should be in soon. I received my LSR steering stem and installed that with the new bearings. I'll be looking to mount the handlebars and the precision shock and vibe bar mounts next (ASV clutch and brake levers should be in soon as well).

Not mounted on the quad but still powder coated and rebuilt is the front brake calipers and master cylinder. I pressed a new sight glass into the front master cylinder but will be rebuilding the plunger in the next day or so. I haven't done the rear brakes and master yet because I already had a bunch of parts sitting on my workbench so I didn't want to start those until my front brakes were done and ready. I'll get to the rear brake in a bit.

But that is how she sits now. I'll post all the photo progress. Hope you like it. Once again, don't mind my messy garage. Gotta clean it up once I get a few more of these parts back on the R.


Offline jcs003

Re: My rescued 86 TRX250R build
« Reply #10 on: September 08, 2017, 03:34:04 PM »
looking good.  I hope your engine is reliable.  I have heard reliability issues with BDT.

keep us updated.

John

Offline nick20555

Re: My rescued 86 TRX250R build
« Reply #11 on: September 08, 2017, 04:09:13 PM »
looking good.  I hope your engine is reliable.  I have heard reliability issues with BDT.

keep us updated.

John
I've seen a good chunk of people hating on BDT but I won't hold that against him because from what I've seen so far, he's doing excellent with my motor. He has taken longer than planned to build it but it seems that is because he is being very detailed with the motor. He sends me pictures throughout the process. So far, I've seen my cracked and messed up cases repaired and looking brand new with excellent powder coating. He's even made sure to take the cases once and one of the covers as well, back to powder coat because they had small flaws. Sent me pics and I could barely tell there was anything wrong. That's showing me that he's not letting even the smallest flaws slide on my build. That's the kind of detail I'm looking for though because so far I think my build is looking like showroom quality. But that's just my opinion. I'll attach the latest photo I got.

I had the factory 43 nerfs and front bumper on but removed them to work on the a-arms easier. Still gotta finish the front end but its starting to come along. I don't know if some of you saw but Maier just redesigned their race cut front fenders for our quads and I got in on the first batch they made. They look real good in my opinion.

Well, its not letting me attach the photo. I'll try again another time.

Offline jcs003

Re: My rescued 86 TRX250R build
« Reply #12 on: September 08, 2017, 04:49:49 PM »
sorry if i seem discouraging, but BDT markets aesthetics. where they lack the knowledge to properly build an engine, and they do not understand proper inspection and machining process, to allow a reliable engine to be produced.

I hope your engine runs well, but this is just one 250r guy looking out for another, and letting you know BDT is not a trustworthy company.

Offline hickwheeler

Re: My rescued 86 TRX250R build
« Reply #13 on: September 08, 2017, 07:01:21 PM »
A broken watch is even right twice a day.
88 hybrid 431 puma
88 (BOF Build) stock motor and oem 89 plastics
More in the works

Offline The norm

Re: My rescued 86 TRX250R build
« Reply #14 on: September 09, 2017, 12:20:34 AM »
sorry if i seem discouraging, but BDT markets aesthetics. where they lack the knowledge to properly build an engine, and they do not understand proper inspection and machining process, to allow a reliable engine to be produced.

I hope your engine runs well, but this is just one 250r guy looking out for another, and letting you know BDT is not a trustworthy company.

Not to be one to spread hate and discontent.... I had a bdt motor. It ran hot no matter what I did jetting wise or coolant wise. In the end I discovered that the dome was a 17.5-1 dome when in fact it was supposed to be a pump gas engine. It was even engraved "310 pump". When I contacted Carlos at bdt I was verbally assaulted. I've also ordered brand new OEM nos parts only to receive used oem parts in a Ziploc bag. So in the end a person needs to learn their own way. But like John stated above... Just one 250R guy trying to help out another. Thanks Loren
1986 Trx250r-- Hybrid Engineering 391(Good bye super 310)
1986 Trx250r-- Hybrid Engineering  ported stock 86 cylinder
1986 Trx250r-- craigslist engine with unknown ported 89 cylinder.
1985 Atc250r-- Needs a lot of work (Super 310's new home)

 

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