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Project 87 Xc build

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8.5K views 45 replies 9 participants last post by  rollingmenace  
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#1 ·
Ive been wanting to build another TRX since its been a while.. im planning on running it in a local race series CORCS or Colorado Off Road Championship Series.. real similar to gncc racing with occasional mx elements thrown in.. im really setting out to build a nice woods/trail bike and occasionally race it..
heres what im starting with basicly a bone stock 87.. it has had some motor work but unsure what exactly .. has a fmf pipe and an ims large tank.. I picked it up in Utah and immediately took it to the dunes and abused it..
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#2 ·
heres the plans strip totally down repaint frame and gusset kit .. new plastics..new graphics and number plates.. new bars and riser possibly steering stem.. new controls all cables replaced..new steering stabilizer new beadlocks and tires.. full pro peg nerfs.. new grab bar and front bumper.. new fullflight front arms 2+1 .. new front shocks trx450 fully rebuilt and revalved... possibly rebuild and valve stock rear.. depends on if I can find a decent deal on suspension.... also plan on going through the motor most likely ESr 310 and a CT pipe. and a slew of other goodies ... including a custom built Baja light bar
have the arms and new front brake lines from fullflight. controls and cables on their way as well as some other stuff
 
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#4 ·
Sounds like a plan, lots of potential there!

McGruber said:
Im excited to watch you do this...
Im a three wheeler guy but for some reason I have this urge to get a TRX and try out the quad scene. It would also look good in my collection of 4 atc250rs.
Any way... have you considered going with the stock jug, with a 4mm stroke and a good flow and port job? will create more power than an 310 esr.
Click to expand...
I've heard similar on these forums, that a good builder can damn near squeeze the same amount of power out of a well tuned stock cylinder as an aftermarket 310. I don't know if it's true or not though...?

It'd make for a fun sleeper though!!
 
M
#3 ·
Im excited to watch you do this...
Im a three wheeler guy but for some reason I have this urge to get a TRX and try out the quad scene. It would also look good in my collection of 4 atc250rs.
Any way... have you considered going with the stock jug, with a 4mm stroke and a good flow and port job? will create more power than an 310 esr.
 
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#5 ·
im a big threewheeler guy myself.. I love my R's although ive had a TRX in one form or another for years... as im building this bike we actually are building my old trx with a tweeked frame that I gave to a friend so he could put his own budget quad together and ride with us.. I have tons of toys mostly red but some green as well... ive considered having the stock jug worked I know they can be made to rip.. I have a atc that is the fastest small bore 250 based motor ive ever ridden. and ive rode hundreds.. but ive always wanted the 310 just to see what I can get it to do...
I just ordered a ton more stuff today for it I should be in full swing by next week... here are some of my atc's
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#11 ·
well not a lot of progress but more parts showing up daily.. got to split my time between riding and getting the ATC's ready for the ride in a few weeks....went riding today on the dirtybikes lol
BUT did manage to get the trx inside and up on the stand and start the strip down of her.. ill start pulling parts amd putting em in totes this week hopefully be able to start the frame gussets by this weekend

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#12 ·
More parts arriving daily.. Got all new controls and levers new cables and bars... Aluminum radiator shrouds showed up today and ups is supposed to be bringing a box from Alba with new nerfs and a few other goodies.. Time to get out in garage and work on stripping it more I got about 40 minutes to work on it before pool league
 
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#22 ·
Now for the fun stuff.. Finished stripping the bike to bare frame.. Turns out I missed a few issues on the bike .. THE FRAME IS STRAIGHT but a little worse off than I expexlcted... No signs of cracks in the obvious stress points but I did find two issues ..
#1 and the main issue.. Lower motor mount on riders left is gone
#2 tab that holds coolant resivor is broken off luckily I have tab
good thing I'm proficient with a welder I'll weld the tab on and go to work fabricating the lower motor mount ...
DOES ANYONY HAVE SOME GOOD PICS OF ONE OFF OF AN 87??? The right tab has a slight twist I think it's the tab that's tweaked and needs to be straightened.. I can compare it to the 86 frame I have I guess.. Then I'll start installing gusset kit.. Anyone have pics of a good gusset kit installed on one of these...
Heres some eye candy for ya
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#26 ·
On the frame I'm thinking just paint .. Considered powder but for the cost involved paint is a better option that allows me to spend money elsewhere.. Plus with paint it can easily be touched up.. And if I'm unhappy with results I'll pull it apart over next winter and powder it...
Also I didn't forget you on the lightbar.. I'm heading to the dunes in Utah on Thursday and I'll ask the man who makes em in person...
 
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