1986 Honda trx250 three wheeler conversion
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By BruceG
Hi guys. I have a problem where the quad will start and run well for about 5 minutes and then it dies. On inspection the airbox has oil in it (quite a lot). The oil is pumping through the cylinder head breather hose. This problem first happened suddenly. I have since done the top end including, piston, gaskets, rings and valves. I have also done the carb (not that I thought that this was the problem). The compression seems normal. The only thing that I can think of, is that I did not grind the valves well enough. Anyone experienced this? If so, how did you fix it? Any other thoughts?
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By Mikey69
Heres my story. Kinda long. I guess I was a late bloomer when it comes to quads. I had never ridden a quad in my life. Rode Dirt Bikes as a kid growing up. Back in Oct of '06 I found a Mustang on craigslist. Took it for a test drive one morning before work. Fast car. 351 Cleveland. I had planned on meeting the guy again after work. For some strange reason thats still to this day beyond me, I stopped in Hillsboro MotoSports on the way home from work. I had 6 Grand on me. There was a left over '05 sitting by the front door. It was on sale for $4999. It was $5499 OTD. I didnt even look at anything else. I knew nothing about quads accept I thought it really looked coool and I had the money in my pocket to buy it. I was sitting on it when the salesman walked up and asked... "Can I help you?" Without hestitation I pulled 60 Ben Franklins outta my front pocket and said "I want this Quad. Load it up in my truck." It was just about dark by the time I drove away from the shop. BTW, I didnt bother to ask my ol lady if I could buy it. LOL. Anyway, I took it by the house and showed her. She was kinda stunned but not mad. We drove over to a friend of mines house and unloaded it. I took it to the field across the street from his house. HOLY CHIT!!!!! I was surprised by the power. I had it for about 2 weeks and took it to Sand Lake. I was there a few hours and rolled it on a banked turn at the top of the bowl right before you get to the one-ways. When it rolled, I flew off and landed on my belly. The quad came bouncing and landed on my back. For a month I couldnt even walk. I was scared of it. I considered trading it for a 250EX. Went back to the shop. The salesman said..."Dude!!! You dont want a 250EX!!! Trust me. Just get used to it" I still wasnt convinced. I put it on craigslist for $4000. Calls were coming in. I had a guy that wanted to come look at it that evening. I decided to take it for one last ride at Browns Camp before I sold it. I was still afraid of it. After about 5 minutes I started feeling comfortable on it again. I decided right then, I loved my Honda 450 and would learn how to ride it instead of selling it. That was late Nov of '06. Work was slow for a Painter in Oregon. My new job everyday? Going to Browns Camp and ridding my Quad. I bought my Girl Friend an '02 Blaster. I rode my 450 for 4-6 hours almost every single day for 3 months. And yes, I know my way around Browns Camp pretty well. LOL. In March I bought her an '06 TRX250EX (Thank God I didnt trade my 450 for one of those) LOL Since then, I have become totally addicted to quads. I love them. Couldnt imagine not owning at least one quad. Luckily I have two. My "07 was $6500 OTD in July of '07. Bought it for my Girlfriend. Traded in her 250 EX. A month later we broke up. So, I wound up with two Honda 450's.
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By mga
I have to replace all 4, how much is involved? Will they slide out of the front yoke? Or, do the boots just slide over the wheel end?
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By dvs1961
Just bought a new hisun ,been shopping for a year or more for a sxs best bang for the buck...Are there any lift kits out there for a 2022 Hisun 750 sector ? links thanks
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By killer420
I know this has been talked about, so i did some research.
After my research, i started buying parts.
Here are the parts you need:
51380-HP7-A00, left front upper control arm
51370-HP7-A00, right front upper control arm
51350-HP5-600, right front lower control arm
51360-HP5-600, left front lower control arm
44615-HP5-600, front drive hubs (need 2)
53521-HP5-600, tie rods (need 2, this is just the adjuster rod, not the tie-rod ends)
51200-HP5-600, right steering knuckle
51250-HP5-600, left steering knuckle
53235-HP5-600, steering arm (connects the tie rod ends to the steering shaft)
23611-HP5-600, "final shaft", goes inside the engine, provides power to front and rear driveshafts)
40400-HP5-600, front driveshaft
44250-HP7-A31, right front axle
44350-HP7-A31, left front axle
11300-HP5-000, front crankcase cover
50350-HP5-600, front differential support bracket
41400-HP5-A50, front differential unit
You also need the 4wd shift lever and the cable that connects it to the differential. there is not a part number for the whole assembly, just look on ebay. thats where i got mine.
Now on to the good part, the turning of wrenches:
Here is the engine before removal:
after removal:
front differential in position:
^^^notice the "TRX420TM" decal, indicating 2wd
Here is a pic of the "final shaft", comparing the 2wd (in my hand) to the 4wd (in the engine).
^This is the most difficult part of this conversion, removing and opening the engine to swap out this shaft. However, there is a lovely video on youtube showing how to rebuild this engine and they clearly show the steps to remove/replace the rear cover and final shaft. Dont forget to remove the front cover before installing the new shaft, it will not fit thru the 2wd front cover.
link to video>:
once the new shaft is installed:
you will need to install the front and rear covers using sealant, make sure all shims/washers and o-rings are in place in the correct locations referencing the video above.
here is the right front corner mostly assembled:
and fully assembled with hub, rotor, and brake caliper:
I do have more pictures to upload, when i have more time i will update this further
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