Yamaha TRX850 Enthusiasts Forum

When I bought my new engine there were a set of carbs thrown in on the deal

Thing is they are slightly different to the carbs I took off

If I didnt know better Id say they had " pumpers " on them

Ive swapped 2 Trx engines and a Tdm recently and none of them had this on the carbs

Looks cool going up and down when you rev it though

1st the old carbs



and here are the new ones



Youre advice would be appreciated

Chris

Hmm interesting, what does the number on the carbs read? Stock TRX carbs are: mikuni BDST38 / 2 designation.

I never checked TBH .......... id have to lift the tank to look

might be my imagination but the bike does seem to go better

ive fitted that black engine off ebay a few weeks ago ..... the carbs came with it

Chris

I think you will find that Japanese Imports have pumper carbs, and black engines
I know my bike haz em.

click to enlarge

Yep that seems to be the situation .......... just found a thread on Carpe

Apparently they give a better low range response

Might explain it feeling a bit livelier on set off


http://www.carpe-tdm.net/tdmforum/viewtopic.php?t=2749