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post #1 of 19 Old 01-02-2019, 02:03 PM Thread Starter
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Camshaft

Looking for an OEM Camshaft. Decompression Lobe went out on mine. I found it for $118 onlilne, just putting out a feeler trying to save some $$$. Thanks


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post #2 of 19 Old 01-02-2019, 07:59 PM
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maybe I can help

751 ,barker pipe,290 Web cam,+3 stroker,TB bored to 46.8 and moved back from head 1 inch,+3 big bore , +1 intake valves, Hard Welded Rockers,KW springs, ported, clutch mod , air box removed ,Cat oil mod, dynojet commander V w/auto tune , lowered rear end , TRX450R front shocks ,
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post #3 of 19 Old 01-04-2019, 04:08 AM
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Originally Posted by jasonroebke View Post
Looking for an OEM Camshaft. Decompression Lobe went out on mine. I found it for $118 onlilne, just putting out a feeler trying to save some $$$. Thanks
Hello,
without it, did you encounter problems when starting engine?
I'm thinking remove the mine decompression lobe, because sometimes, remains active,
and engine shut off,
during idle, especially when the temperature is below zero
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post #4 of 19 Old 01-04-2019, 04:30 AM
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Originally Posted by /CUDA View Post
Hello,
without it, did you encounter problems when starting engine?
I'm thinking remove the mine decompression lobe, because sometimes, remains active,
and engine shut off,
during idle, especially when the temperature is below zero
I could imagine you could remove it if the cam you are using had enough overlap . pretty sure hotcams wont work with out the decompressor. not even sure the 290 web cam will let it roll over with out the decompressor

751 ,barker pipe,290 Web cam,+3 stroker,TB bored to 46.8 and moved back from head 1 inch,+3 big bore , +1 intake valves, Hard Welded Rockers,KW springs, ported, clutch mod , air box removed ,Cat oil mod, dynojet commander V w/auto tune , lowered rear end , TRX450R front shocks ,
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post #5 of 19 Old 01-04-2019, 04:41 AM
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I do have a hotcam camshaft I will sell .I think that its a 3.

751 ,barker pipe,290 Web cam,+3 stroker,TB bored to 46.8 and moved back from head 1 inch,+3 big bore , +1 intake valves, Hard Welded Rockers,KW springs, ported, clutch mod , air box removed ,Cat oil mod, dynojet commander V w/auto tune , lowered rear end , TRX450R front shocks ,
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post #6 of 19 Old 01-04-2019, 08:55 AM
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Originally Posted by cataway View Post
I could imagine you could remove it if the cam you are using had enough overlap . pretty sure hotcams wont work with out the decompressor. not even sure the 290 web cam will let it roll over with out the decompressor
Thanks for the information,
mean that I will leave it where it is (cam is the original)
I will try to change oil,
with one that cleans better,
to see if this decompressor,
it will work better.
Best regards from IT
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post #7 of 19 Old 01-04-2019, 10:18 AM
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Originally Posted by /CUDA View Post
Thanks for the information,
mean that I will leave it where it is (cam is the original)
I will try to change oil,
with one that cleans better,
to see if this decompressor,
it will work better.
Best regards from IT
check the valve lash . the one that works with the decompressor is critical to the function of the decompressor [right side front valve ]

when I installed the hotcam I had to tighten the space to .006 on than one valve. yeah that was the only way I could get it to rollover

751 ,barker pipe,290 Web cam,+3 stroker,TB bored to 46.8 and moved back from head 1 inch,+3 big bore , +1 intake valves, Hard Welded Rockers,KW springs, ported, clutch mod , air box removed ,Cat oil mod, dynojet commander V w/auto tune , lowered rear end , TRX450R front shocks ,
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post #8 of 19 Old 01-08-2019, 02:39 AM
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Originally Posted by cataway View Post
check the valve lash . the one that works with the decompressor is critical to the function of the decompressor [right side front valve ]

when I installed the hotcam I had to tighten the space to .006 on than one valve. yeah that was the only way I could get it to rollover
thank you very much for the information,
I will check them.
If they seem ok, I will be tempted to cut this extension
of rocker arm, and thus nullifying effects of decomp.
But the engine, will it start?
With a lithium battery?

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post #9 of 19 Old 01-09-2019, 08:31 PM
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Originally Posted by jasonroebke View Post
Looking for an OEM Camshaft. Decompression Lobe went out on mine. I found it for $118 onlilne, just putting out a feeler trying to save some $$$. Thanks
how about a hot cam ?

751 ,barker pipe,290 Web cam,+3 stroker,TB bored to 46.8 and moved back from head 1 inch,+3 big bore , +1 intake valves, Hard Welded Rockers,KW springs, ported, clutch mod , air box removed ,Cat oil mod, dynojet commander V w/auto tune , lowered rear end , TRX450R front shocks ,
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post #10 of 19 Old 01-10-2019, 01:24 PM Thread Starter
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Quote:
Originally Posted by /CUDA View Post
Hello,
without it, did you encounter problems when starting engine?
I'm thinking remove the mine decompression lobe, because sometimes, remains active,
and engine shut off,
during idle, especially when the temperature is below zero

I have not tried to remove it and install the cam with out it. I thought the decompression lobe was a necessity. I will try removing it and turning the engine over and see what happens.



Thanks!


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