The races-86 and 87 Quadracers- there can only be 1 “fastest”. Which is it? - Part 2 

Its true, they're rippers once you start modding the 85/86's.

Ah man, ill have go check sprockets.. i actually dont remember whats on that bike! Ill check

Go up one tooth like you say. I did that back when I had one.

It’s cheaper to change front sprockets but not really recommended. Puts chain closer to case if it derails or breaks it could cause more damage. I always change gearing with rear sprockets. Instead of going higher ur will go smaller with rear sprockets. 3 teeth on rear sprockets is about equal to 1 tooth on front sprocket. Another advantage is smaller rear will give more ground clearance less risk of damage. I always use none O ring chains for top performance. On a 125 u can really feel the power difference it’s amazing. O ring chain great for longevity but will cost some performance. I just buy cheap parts unlimited chains 4 chains is about same as one O ring chain. Idk if i get more time out of 4 chains compared to one O ring but id bet 4 chains will last longer than one. For most people unless running a 125 O ring probably way to go. I did mined a little more maintenance for a little more power. Sometimes gearing up will even put u in a better gear ratio all way around. Like say racing threw whoops 2nd gear is to low for u but 3rd to fast. Gear up after second gear is perfect through the whoops rider preference of course.

The 87+ lt250r's have MORE low end and midrange than a trx250r. I also have a trx250r and prefer the Suzuki's!

We had one on the first 86 we bought -- it sounded great with the DG, but didn't notice much of a performance increase.

@@PGG909 I baught one for a very good price and it’s in good condition that’s why I ask . Sorry I’m doing this 😂 but on a scale of 1-10 how much of a power increase from a stock pipe do you think the DG gives it, and the fmf gives it . And is the power difference switching to a fmf really that much?

@@Yavi250r hard to say… the dg does sound great and some of that “power” with any pipe is more sound than actual power. I’d say the dg is a 5 and fmf is a 7 or 8. Really you need more than just a pipe on a 85/86. You need more compression, bigger carb, and some porting.

Don’t change the pipe on a stock engine ….after some engine mods then do the pipe

Fmf pipe wakes the 85/86 up a lot. Next do a genuine Mikuni tm38 carb. $120 on Amazon. Have the head milled .020” at a machine shop… will cost you about $30. Do all that and she’ll fly

@@PGG909 thanks alot , not alot of info going around about these . Ile definitely keep in touch . Thank you . Keep up the great content by the way !

@@Yavi250r yeah, they’re old so people have moved on. It’s sad… I really like them! More to come on these bikes… I have more good stuff coming

@@PGG909 when you you say shave it down .020 , that’s .5 mm , isn’t that too little? I’m new to this so I really don’t know what a lot or a little is . Why wouldn’t I be able to do a full mm

@@Yavi250r At .040 you might run the risk of piston hitting the crown of the cylinder head. Best case you would need to run 110+ race gas at all times. Also -- too much compression takes away top end at the expense of low-mid range. There is a point of deminishing returns. .020-.025 is a good happy medium where you can still run 93 octane with some Octanium booster and be fine.