SuzukiSavage.com - Exhaust questions/recomendations

renegade1 Full Member Offline SAVAGE Posts: 212 Abbotsford B.C. Gender:	Re: Exhaust questions/recomendations Reply #45 - 05/27/13 at 10:49:47 no doubt that I'm going to be using the dyna, I just need to figure out if I should run the cone filter then jetting.
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justin_o_guy2 Serious Thumper Offline What happened? Posts: 55279 East Texas, 1/2 dallas/la.	Re: Exhaust questions/recomendations Reply #46 - 05/28/13 at 08:19:29 I havent had a clock on it, but if its not a 6 second/60 MPH ride, its real close.
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renegade1 Full Member Offline SAVAGE Posts: 212 Abbotsford B.C. Gender:	Re: Exhaust questions/recomendations Reply #47 - 05/28/13 at 09:30:24 woah that sounds pretty great.. how much tuning have you done to get it to that point? I had to keep messing with my bike for my test because it wouldn't get up to speed on the coarse.
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justin_o_guy2 Serious Thumper Offline What happened? Posts: 55279 East Texas, 1/2 dallas/la.	Re: Exhaust questions/recomendations Reply #48 - 05/28/13 at 09:33:39 IDK if it matters, but I adjust valves to the tight side of Okay, so, I get that last bit of Opened Valve. Jets in the carb white washer idle air S/trapp w/14 disks K&N drop in & I weigh about 145.
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Re: Exhaust questions/recomendations
Reply #49 - 05/28/13 at 09:48:34

I never adjust valves to the tight side. The valves always tighten up over the miles. The reason is because of wear on the valve face and valve seat. This causes the valve stem to stick up slightly higher decreasing the valve clearance on the adjuster.

When the clearance is allowed to get too tight the exhaust valves can burn. Sitting tightly on the seat dissipates heat.

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justin_o_guy2

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Re: Exhaust questions/recomendations
Reply #50 - 05/28/13 at 10:35:49

My bike did jut the opposite. The adjusters rounded & compacted, loosening the setting. After the adjusters "broke in" & slowed @Waaay down on their changing profile I still adjust to the tight side & find I no longer have to adjust at 5,000 mile increments. The valve faces & seats shouldnt be changing enough to be the deciding factor in how it adjusts unless they just didnt get the seats all the way down & youre slowly spanking them into place every compression stroke,

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Re: Exhaust questions/recomendations
Reply #51 - 05/28/13 at 11:08:37

Yours would be an unusual case. I have been adjusting motorcycle valves since the 60s and have observed most of the time that they tighten up. As have others I have spoken with.

There are always exceptions. I have seen poor heat treating and metallurgy causing short life in the adjusters and valve train. But this is rare but it does happen.

If the adjuster nuts are not torqued down enough they could loosen some. If the wrong oil or sub par oil is used there can be premature valve train and rocker arm wear. But also cam wear. I believe I will stick to what my long term experiences tell me.

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paulmarshall Serious Thumper Offline SuzukiSavage.com Rocks! Posts: 1268 Carterton,New Zealand Gender:	Re: Exhaust questions/recomendations Reply #52 - 05/28/13 at 12:17:11 justin_o_guy2 wrote on 05/28/13 at 09:33:39: IDK if it matters, but I adjust valves to the tight side of Okay, so, I get that last bit of Opened Valve. Jets in the carb white washer idle air S/trapp w/14 disks K&N drop in & I weigh about 145. I think body weight is a important contributing factor.
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justin_o_guy2 Serious Thumper Offline What happened? Posts: 55279 East Texas, 1/2 dallas/la.	Re: Exhaust questions/recomendations Reply #53 - 05/28/13 at 12:22:26 Heck yea,, accelerating mass takes Horsepower..
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Greg Serious Thumper Offline Molon Labe Posts: 1251 Southeast PA, uSA Gender:	Re: Exhaust questions/recomendations Reply #54 - 05/28/13 at 15:18:16 justin_o_guy2 wrote on 05/28/13 at 12:22:26: Heck yea,, accelerating mass takes Horsepower.. But I don't go to church, so does it matter? And when I did, the priest always accelerated mass so we can get home for the football game.
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justin_o_guy2 Serious Thumper Offline What happened? Posts: 55279 East Texas, 1/2 dallas/la.	Re: Exhaust questions/recomendations Reply #55 - 05/28/13 at 16:03:11 Yea, & HE has he horsepower to get away with that,, You try it & youll get in trouble,
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Re: Exhaust questions/recomendations
Reply #56 - 05/29/13 at 11:48:28

ahahhaha " and thank god for football and please let us win " amen. Yeah I'm 5'8 155lbs and I can get it pretty quick off the line but I seem to always want just that little bit more...
As for the valves I always thought they loosen up and that's why you do the adjustments... to tighten them back down. very interesting.

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justin_o_guy2 Serious Thumper Offline What happened? Posts: 55279 East Texas, 1/2 dallas/la.	Re: Exhaust questions/recomendations Reply #57 - 05/29/13 at 12:28:32 For them to tighten up is rare. They DO "tighten up" some when the valve grows from heat. Thats why you have to leave that gap.
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Re: Exhaust questions/recomendations
Reply #58 - 05/29/13 at 12:46:18

Some interesting reading...

http://www.motorcycleproject.com/motorcycle/text/cows-clear.html

http://www.zx14ninjaforum.com/messages.cfm?threadid=D659042A-D56B-84E2-1C5A7B...

http://www.thumpertalk.com/topic/308658-does-valve-clearance-get-tighter-or-l...

http://www.i-bmw.com/showthread.php?t=20889

http://forum.dirtrider.com/discussion/8166133/valve-clearances-get-tighter-or...

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justin_o_guy2

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Re: Exhaust questions/recomendations
Reply #59 - 05/29/13 at 13:02:10

The reason is that valve clearance will always get tighter over time as the valves wear. From the 2nd one,,

I can assure you, that is absolutely not always correct. My valve adjusters rounded off & shortened from the banging & beating, pushing the valves down. They did that at a rate that far exceeded the valve & seat wear that allowed them to press further up into the head.
The part about the ramps doesnt quite make sense to me either. I know Id rather have anything thats gonna hit me start off as close to me as possible, rather than be standing off & then slammed into me,,Close adjustments keep the ramp from slamming into the rocker & slapping the valve. That makes sense in my head. REsults discovered on race tracks by people with years of experience may contradict that. Ive set mine close for 20,000 miles, Ive seen no sign that Im doing it wrong,

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