Author Topic: RD200DX Baffles  (Read 155 times)

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Offline Sarlat04

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RD200DX Baffles
« on: May 03, 2022, 11:05:10 PM »
Hi Guys,
I am getting around to fitting the exhausts and pulled the baffles but they are different lengths as per the pictures below.
Both silencers are stamped 1E8 so assume that they are correct but the baffles are clearly different.
Does anyone know which would be correct for the bike or perhaps more importantly whether this is going to upset the running?
Thanks in advance.
Rob

Offline Astute Greaser

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Re: RD200DX Baffles
« Reply #1 on: May 05, 2022, 11:50:01 AM »
Rob
Cleaning my Baffles on Goldie RD200A this afternoon. However I also have a set of 1E8 silencers that came with my USA C.
I can compare and give dimensions of the different baffles if you've not sorted your puzzle yet.
-Mike

Offline Sarlat04

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Re: RD200DX Baffles
« Reply #2 on: May 05, 2022, 04:24:39 PM »
 Thanks Mike, that would be useful. Do the baffles in your 200a look like either of the ones fitted to mine?
Anyone know if mis-matched baffles is likely to cause any issues (I have not quite got to the point of starting this up yet)?
Thanks Rob

Offline Astute Greaser

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Re: RD200DX Baffles
« Reply #3 on: May 05, 2022, 05:22:14 PM »
Lengths of straight sections:-
397 = 290 mm = 397-14753-00
1E8 = 320 mm = 1E8-14753-00
102457-0
Baffles are identical except 30 mm longer plus 10 extra holes
The shorter baffle you have is the correct one for an 1E8.

102459-1
Will mismatch baffles be a problem. Well tuning relies upon back pressure. So yes you need two the same. They don't have to be identical to originals so 397, 2R7 or even CS5 will probably do as long as a pair!
On eBay at mo there is a Yambit pattern for sale. They don't do them now  :( and you need a pair!
https://www.ebay.co.uk/itm/325172496519?hash=item4bb5ca8887:g:UfUAAOSw2slib6bZ
Interestingly the 397 & 1E8 exhausts are externally, including mounts points identical. The position of the first baffle plate internally is also same. Only way to know if any differences you would have to carve them up. Are they different, doubt it  ::)
Cheers
-Mike
PS Give that oily pair  :o you have a run over with blowtorch and wire brush. Lot easier to handle  :D :D
Oh throw away the JIS screws that hold the baffles in and use M5 x 10 long cap heads. Lot easier to use Alan key than trying to balance silly screws on driver  ;)
« Last Edit: May 05, 2022, 05:49:41 PM by Astute Greaser »

Offline Sarlat04

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Re: RD200DX Baffles
« Reply #4 on: May 10, 2022, 09:53:17 PM »
Thanks Mike - that is helpful - god knows what the longer one was intended for :)
I missed the one on Ebay so the search begins - I will try posting in the wanted section but won't hold me breath ;D
Rob

Offline Astute Greaser

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Re: RD200DX Baffles
« Reply #5 on: May 11, 2022, 12:00:52 PM »
Nice try Rob.
It maybe cheaper to buy a crap complete exhaust just for the baffle.
Why so may original baffles missing. The 2T stops them rotting but if left in too long, the carbon jams them and they get mullered to get them out.
Have a look at this thread
https://www.aircooledrdclub.com/smf/index.php?topic=64156.0
So many staples missing from the ends. Easy enough to replace though.

Oh course there where aftermarket baffles thought to make the bike louder and faster  ::) ::), truth is Yamaha got it best part right.

Then the Numpties thinking no baffles great  :o :o. The engines must have back pressure or the 2 stroke cycle is compromised.