riv187's Forum Activity

Reply to 1984 KX250, the restoration "befores" 9/9/2019 11:51 AM

Many irons in the fire. Keeping my stuff and friends going through season is time consuming,,then working on the barn building paint booth inside this summer, I injured my hand that required surgery and has me out for 2 more months.Hoping DrGreg can ... more »

Reply to 1984 KX250, the restoration "befores" 9/6/2019 1:20 PM

Hi, Have you worked on the KX any?Any updates?

Reply to Fox AirShox spherical bearings - '79 Honda CR250 8/23/2019 7:27 AM

Here is a fox with heim vs yours. Fox made this for Husky, because husky canted the shocks. This set-up did not have lower bladder. I have several different bikes I race with foxs, including 79-80 cr250s. Been building them for customers ... more »
Reply to 1980 RM125T Squish... 8/23/2019 5:48 AM

the difference should bump compression 15-20lbs. 160lbs is a good compression number for power and rpm without building heat

Reply to 1980 RM125T Squish... 8/22/2019 5:20 PM

Mine is .030" with DG head. I ordered a custom copper head gasket .020" to get this. Stock head gasket is .040"(1mm) and resulted in .050". .030-.035 is ideal. Stock head is full combustion chamber and has no squish band. Still, you can measure outside ... more »

Reply to Info needed for a 1982 KX250 8/4/2019 6:22 PM

I think many times restoring a bike is a break even or loss. It’s easy for me to spend 800-1000 rebuilding a engine properly,, replated cylinder, piston kit, rod kit, clutch, basket,oem bearings, odds &ends. I love KXs this vintage, and have a 84 ... more »

Reply to Old school Pro Circuit pipes 7/27/2019 10:36 AM

I think I would do a combination of things. Vforce reeds,,, Pwk 34 air striker, stock pipe,, tighten squish to .030. Or measure the squish with clay or solder,,, then send head and cylinder too Eric Gorr. Tell him what your doing and he’ll port cylinder ... more »

Reply to Anyone built a Yamaha DT175 race& scream? 7/22/2019 1:13 PM

I wondered if a dt175 topend could be ported and installed on mx or yz 125 bottom of same year.

Reply to 17 Tc 125 cracked head 7/22/2019 1:00 PM

I have my 2018 head with 7 hrs. $40 USD plus shipping,,,,or do as I did,,and get RK make you one like this. Run smoother with wider power band.
Reply to Anyone built a Yamaha DT175 race& scream? 7/22/2019 5:54 AM

0-200 75 older

New thread Anyone built a Yamaha DT175 race& scream? 7/21/2019 7:33 AM

Anyone modified a dt175 engine to race vmx?? We have a 0-200 class in our club. Wonder if a Dt 175 can be built to race cr125s?

This forum thread has 8 replies.

Reply to Paging riv187 7/19/2019 1:58 PM

Agreed !, 51 hours and still 200 psi is amazing!!! Did you have too lift the tank up like I did? I tried slipping that line through both sides of rad fairing and finally gave up an pulled tank. The one thing that I have had in other bikes I race,,is ... more »

Reply to Paging riv187 7/19/2019 8:30 AM

Hi AJ mine has 14.8hrs on clock. Still stock minus the long silencer and carb mods. 5 hrs + of mine are just goofing in back yard 1st gear. 211psi cold. My gauge has long 18” hose. If yours is shorter/ longer by much can vary our comparison. I’m also

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Reply to 125 All-Star entry info 7/15/2019 4:37 PM

We raced WW ranch 125 All Star,,,,my '18 TC125 ,,Cole Ughetti piloting,,,Had a GREAT time . Cole never raced or even rode 125s prior to me asking him to race for me on it. He adapted quickly and got 14th. If the 125s get air time on TV with the go pros...it'll

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Reply to Suzuki RM125 1977 & 1978 cylinder difference 7/15/2019 9:48 AM

78 the exhaust ports widened at roof, like 2 trapezoids as I remember. Ported they make the trapezoids even wider. \.| |./

Reply to 125cc All Stars at Red Bud 7/7/2019 6:12 PM

Good job Cole! Considering you may have been 5-7hp less than stock Austrian bikes. I think you caught the 125 bug ! Your fast now,,but with more 125 seat time....wow you'll be moving up the list!

Reply to White plastic renew 7/7/2019 10:41 AM

I like Wesleys White wall cleaner!

Reply to 17 TC 125 cutting out 6/24/2019 6:58 AM

I posted the first pictures of how I cut my slide,,,I also run the clip at top,,stock pilot jet,I think 32.5 in the 18 model, and have 460-500 main jets. I have a adjustable power jet built into back of carb to tune the top end. Another tuning tool is ... more »

Reply to 17 TC 125 cutting out 6/11/2019 9:18 PM

Im not certain if our problems are same. The one I had,,and many others with 125s, and 250s and the Mikuni came when accelerating. When I cracked it open from idle it would start to take off- then hiccup some or sputter- then take off again. The hiccup ... more »

Reply to 1984 KX250, the restoration "befores" 5/7/2019 5:33 PM

Nice bike to restore. I have one as well to redo someday. The articles I found said the motor was a torquer. I have a dirtbike 250 shootout issue, and May 1984 Cycle test issue.