-170cc Big Bore kit (Engine's Only)
-HD clutch (Engines's Only)
-HD valve springs (Engine's Only)
-428 chain conversion (Sprockets Specialist)
-Rev Box (BBR)
Nov 15, 2007 (updated)
It's been some time since I've fiddle with my site. I took at look at it and didn't
realize that I never gave a full report. Shame on me. Well, I know I won't be typing up a full report right now, but I should
probably put in a few words.
My top end really opened up. The stock
engine is fun. It's harmless, but it's fun. I like the playfullness of the stock engine. There are no big hits in the power,
but the tame powerband is pretty wide. It's fun stock.
the mods, it's a different kind of fun. Now I can't even ride against a stock 150. It's just not fair. Low, mid, and highs;
The 170cc is stronger in all areas. I noticed the mids and highs were really strong.
had the new engine for a while now. The best thing about it is that it's maintenance free. If I wanted, I could put gas
in and go. Try doing that on your CRF150R. It's not going to happen. I do treat this thing like a race bike with oil changes,
caring for the chain, greasing, etc. , but it's only because I'm neurotic.
someone's hoping for me to get very detailed about the engine, I have to say, it's a bit hard. It just runs much better than
the stocker. I know that doesn't say much, but there isn't much to say about it. It's what I had hoped for. A stronger
More lows, more mids, and more highs. Frank did all the
work. I haven't had a single issue. I got my motor back from him, bolted it back into the frame and it's been running like
Would I do it again? Yes. Expecially since I know a lot
of other big bore kits out there have some issues. Good luck on what you decided to do.
only other big bore kit I would consider was Coeshow's. I went with Frank because he was local. Coeshow's is interesting
though. As far as I understand, Mike did a different approach to his kit. Some machine work had to be done, which I believe
his shop offers, but the interesting part about his 188cc kit was he kept the compression down close at about 9.5:1 or something
I know a lot of racers just want high compression, but
personally, I was really intrigued by this. Reliability goes a long way, if you ask me. Luckily, we have our choices, right?
May 26, 2006
I said a long time ago that I’d write
a review on Engine Only’s 170cc kit w/ cam. Since then, I really couldn’t
find the time to test it on dry ground with my carb set up correctly. Well, I finally
went out and really gave it a good test. I had planned to write up some really detailed
review and all that; good or bad, I was going to share.
I’m here typing, I just erased everything I typed. I’ll just give you
a little story.
stocker was a lot of fun. The suspension was redone so I figured I’d just ride
turns with momentum to keep up speed. I went to a local track, Club Moto. It’s a tight track with 180 degree turns. The result was I couldn’t
get out of the turns fast enough. Sure, I was riding with 450’s, but I didn’t
realize how low I was in power until I got to the 180 degree turns. I called Frank
at EO the next day. I got the 170cc kit, cam, HD clutch w/ springs.
bike is a totally different bike now. It has a lot more power everywhere and it actually
has a sweet spot (higher revs). Now I don’t think I’ll be going to Club
Moto anytime soon, but I don’t think I‘ll be a hazard out there like I was. Maybe
I’ll just have to find out.