2004 raptor with yz 250 engine
- Thread starter jaysblastin
- Start date
If that chassis is indeed from an '04 Raptor (looks like it!), its a 660. The Raptor 700 's didn't come out until 2006.
I know very little about Tri-Z's, but after doing a little searching, here's one on ebay with lots of engine pics for comparison.
1985 Yamaha TRI Z 250 never fired top end fresh bore 40 over Motor only | eBay
After looking at the pics, I think everybody's right...its a Tri-Z engine with a Blaster kicker. Plus, look at this:
http://cgi.ebay.com/ebaymotors/1986...ATC-/110798465465?pt=ATVs&hash=item19cc1a69b9
Look how the pipe bends on this stock Tri-Z, then compare it to the engine in the Raptor chassis. Looks the same to me, except for the obvious fact that the pipe in the Raptor is a DG, not a stock Yamaha part.
I'd rather have the Tri-Z engine in a quad frame, anyways. I'm sure its almost as powerful and probably much smoother than a YZ setup...
I know very little about Tri-Z's, but after doing a little searching, here's one on ebay with lots of engine pics for comparison.
1985 Yamaha TRI Z 250 never fired top end fresh bore 40 over Motor only | eBay
After looking at the pics, I think everybody's right...its a Tri-Z engine with a Blaster kicker. Plus, look at this:
http://cgi.ebay.com/ebaymotors/1986...ATC-/110798465465?pt=ATVs&hash=item19cc1a69b9
Look how the pipe bends on this stock Tri-Z, then compare it to the engine in the Raptor chassis. Looks the same to me, except for the obvious fact that the pipe in the Raptor is a DG, not a stock Yamaha part.
I'd rather have the Tri-Z engine in a quad frame, anyways. I'm sure its almost as powerful and probably much smoother than a YZ setup...
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Might be difficult kicking forward on a forward folding kicker ... LOL
Don't know bout that ...
If it was counterballenced with a Blaster gear set I'd buy every one I could find ... LOL
Here's a gear comparison, not sure if the tri-z is correct. I still think the WR is the best of the 3 for a quad
---- Blaster --------- 89 WR250 -------- 90 YZ250 -------- Tri-Z
1st 34/11 (3.091) -- 32/14 (2.285) -- 31/15 (2.067) -- 30/14 (2.142)
2nd 31/14 (2.214) -- 29/17 (1.706) -- 29/17 (1.706) -- 28/16 (1.750)
3rd 25/15 (1.667) -- 24/18 (1.333) -- 22/16 (1.375) -- 26/18 (1.555)
4th 20/16 (1.250) -- 21/20 (1.050) -- 22/19 (1.158) -- 24/20 (1.200)
5th 19/18 (1.056) -- 21/25 (0.840) -- 23/23 (1.000) -- 22/22 (1.000)
6th 19/21 (0.905) ------ N/A -------------- N/A ---------------- NA ------------
Don't know bout that ...
If it was counterballenced with a Blaster gear set I'd buy every one I could find ... LOL
Here's a gear comparison, not sure if the tri-z is correct. I still think the WR is the best of the 3 for a quad
---- Blaster --------- 89 WR250 -------- 90 YZ250 -------- Tri-Z
1st 34/11 (3.091) -- 32/14 (2.285) -- 31/15 (2.067) -- 30/14 (2.142)
2nd 31/14 (2.214) -- 29/17 (1.706) -- 29/17 (1.706) -- 28/16 (1.750)
3rd 25/15 (1.667) -- 24/18 (1.333) -- 22/16 (1.375) -- 26/18 (1.555)
4th 20/16 (1.250) -- 21/20 (1.050) -- 22/19 (1.158) -- 24/20 (1.200)
5th 19/18 (1.056) -- 21/25 (0.840) -- 23/23 (1.000) -- 22/22 (1.000)
6th 19/21 (0.905) ------ N/A -------------- N/A ---------------- NA ------------
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the 86-87 yz250 exited out the left side, and neither had a power valve..and they look awfully similar to this engine and front frame portion of what can be seen.
That frame work is interesting never seen anyone do a swap like that before. Also im not sure when yamaha started putting power valves on the YZ250 but i would think that since they introduced it in 1977 on race bikes with consistent results that mid to late
80's production bikes would have them.
80's production bikes would have them.
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