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Post by fozzie1954 on Apr 18, 2020 10:35:32 GMT 1
Hi all
Trying to convert my 250 to a 350. This question may have been done to death ..... but gonna ask anyway. Just preping an order for Norbo and b4 I send it my question is , are the PVs the same for the 250 as the 350 ?
My PVs look is excellent condition ( which is a surprise, if you you look at my other chat almost everything else was sha**ed ) and i dont want to get a new set - measure em up - to find they are identical !
Know the Bushes are bigger .
Any comments ... info please.
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Post by muttsnuts on Apr 18, 2020 12:05:47 GMT 1
no, the RZ250 PV's are smaller, as are the bushes
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Post by midlifecrisisrd on Apr 18, 2020 13:14:49 GMT 1
Power valves must be different as the curve of the piston is different due to the 54mm and 64mm
Pistons
Steve
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Post by JonW on Apr 18, 2020 14:18:12 GMT 1
Half the 250 is the same as the DT200R i was told, but ive never checked.
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Post by LC_BOTT on Apr 18, 2020 14:50:00 GMT 1
How much of a performance gain are you going to get by converting it to 350? Will the cost outweigh the benefits, I've got a 250 engine I bought ages ago. Wondered whether to fit it to something or not.
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Deleted Member
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Post by Deleted on Apr 18, 2020 15:29:40 GMT 1
IF you have a 51L set of jugs, leave the engine as it is
You won't notice too much difference in performance at all
They will only be a couple (2) down on a 350 and be a much smoother engine
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Post by midlifecrisisrd on Apr 18, 2020 15:49:24 GMT 1
How much of a performance gain are you going to get by converting it to 350? Will the cost outweigh the benefits, I've got a 250 engine I bought ages ago. Wondered whether to fit it to something or not. I've always fancied building an lc hybrid using an 250 ypvs motor As said only 2hp down on a 350lc Tzr running gear or the likes and probably a right hoot. Steve |
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Post by JonW on Apr 18, 2020 16:12:32 GMT 1
How much of a performance gain are you going to get by converting it to 350? Will the cost outweigh the benefits, I've got a 250 engine I bought ages ago. Wondered whether to fit it to something or not. As said only 2hp down on a 350lc Tzr running gear or the likes and probably a right hoot. Steve I should really finish mine with the 51L motor, it just needs paint :/ Oh and its 48bhp, so 1bhp up on an LC350. |
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Post by fozzie1954 on Apr 19, 2020 8:33:37 GMT 1
Thanx for the replies.
I wanted a challenge and a hobby that was different to the bikes I've had a go at before. Talked to various VJMC members and YPVS owners (including 3 or 4 at the Classic - one particularly at the Calf of Mann) over a short period and all agreed in view of a full rebuild it would be advantageous to refurb and have a 350 at the end. More forgiving to ride, a little more powerfull and a better more saleable bike at the end.
Original bike was a 29L, so any thing " in stock " is gonna be 29L or for the "new /replacement" parts I've gone for 31K. As for noticing whether the 250 is better or worse than 350 I've nothing to base it on as never ridden " any of the RD's ".
Its good to get good "food for thought" and comments from those who have the experience/knowledge to comment GREAT STUFF keep it coming !
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Post by jon on Apr 19, 2020 10:33:03 GMT 1
If you have the fabled 51L barrels then as others have said your not going to get a massive difference.
I’ve never had them myself, but have heard many comments about them.
I have ridden bikes with RD250LC and RD350LC barrels on and can honestly say that 350 barrels make for a more rideable bike.
Jon
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Post by fozzie1954 on May 2, 2020 6:17:42 GMT 1
Thanks Jon.
Just put in an order to Norbo ( a big 'un - for me anyway ) for all new P V s to progress what I'm starting to call the Money Pit.
Good job still in full time at work and boss still want O/T to cope with work load !
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Post by mak595 on May 2, 2020 15:31:47 GMT 1
Thanks Jon. Just put in an order to Norbo ( a big 'un - for me anyway ) for all new P V s to progress what I'm starting to call the Money Pit. Good job still in full time at work and boss still want O/T to cope with work load ! Are you wanting to sell the 250 PV's? |
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Post by fozzie1954 on May 3, 2020 8:21:39 GMT 1
Hi .. probably yes . Along with the barrels, head Etc. But it will not be quite yet as with the other projects I've had a go at , it's taught me Don't get rid of anything until completely finished.
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Post by mak595 on May 3, 2020 10:10:04 GMT 1
Hi .. probably yes . Along with the barrels, head Etc. But it will not be quite yet as with the other projects I've had a go at , it's taught me Don't get rid of anything until completely finished. OK thanks, i've got barrels etc but my PV's are a bit muldered  |
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