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jbert22
MMT Pro Member
Joined: Mon Jan 11, 2010 6:50 pm
Posts: 121
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 Bigger exhaust valves. Worth the $? Are the set of stainless valves worth the money. I'm sure it would help but are they really worth 400 bucks like on the mudbuddy site? And why can't I just replace the exhaust valves with stock intake valves to enlarge them.
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| Sat Jul 23, 2011 8:08 pm |
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craig
MMT Elite Member
Joined: Tue Jan 13, 2009 7:53 pm
Posts: 7515
Location: Chauvin
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Re: Bigger exhaust valves. Worth the $?
_________________
1750 GatorTail Extreme/Stage 3 37 GTR HD
Procrastination is a lot like masturbation. Sure it sounds great at the time but, in the end your only f--k--g yourself.
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| Sat Jul 23, 2011 8:10 pm |
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jbert22
MMT Pro Member
Joined: Mon Jan 11, 2010 6:50 pm
Posts: 121
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Re: Bigger exhaust valves. Worth the $? Check out the mudbuddy site. I'd love to find some valves that cheap
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| Sat Jul 23, 2011 8:15 pm |
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cb5331
MMT Super Elite Member
Joined: Fri Dec 18, 2009 8:10 pm
Posts: 16915
Location: Rowlett, TX
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Re: Bigger exhaust valves. Worth the $? Pretty sure they're 110 bucks for a set of 4 from bps. If not, performance v twins has the manley's (i believe the same that bps uses) for 35 bucks a piece. EVT has ferrea's for 240 a set.
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| Sat Jul 23, 2011 8:20 pm |
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garrettpearce
MMT 1000 Club
Joined: Mon Jul 27, 2009 8:10 pm
Posts: 1436
Location: down da bayou
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Re: Bigger exhaust valves. Worth the $? So are they worth it
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| Sat Jul 23, 2011 8:54 pm |
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Team Camo
MMT Sponsor
Joined: Thu Oct 01, 2009 4:49 pm
Posts: 8536
Location: Bridge City, TX
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Re: Bigger exhaust valves. Worth the $? Are they worth $110? Definitely. Are they worth $400? Not to me.
_________________
1846 GTB & 35 GTR
Team Gator-Tail
Killer Kallz & ANGLE PORT dealer
(409) 720-8949
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| Sat Jul 23, 2011 10:41 pm |
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deadbird8
MMT 1000 Club
Joined: Wed Feb 04, 2009 7:50 pm
Posts: 3833
Location: Old East Dallas, Texas
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Re: Bigger exhaust valves. Worth the $? The question to ask is: what is getting rid of the stock valves and their chronic leaking seats worth?
You have to also factor in the cost installation of the valves/seats. I agree with Camo
_________________
Excel 1851F4 w/ MB35HD+R CDI with a little bit of this and little bit of that
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| Sun Jul 24, 2011 5:12 am |
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50fps
MMT 1000 Club
Joined: Tue Jan 13, 2009 6:42 pm
Posts: 2377
Location: West Coast Wisconsin
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Re: Bigger exhaust valves. Worth the $?
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| Sun Jul 24, 2011 12:50 pm |
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cb5331
MMT Super Elite Member
Joined: Fri Dec 18, 2009 8:10 pm
Posts: 16915
Location: Rowlett, TX
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Re: Bigger exhaust valves. Worth the $?
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| Sun Jul 24, 2011 1:12 pm |
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cb5331
MMT Super Elite Member
Joined: Fri Dec 18, 2009 8:10 pm
Posts: 16915
Location: Rowlett, TX
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Re: Bigger exhaust valves. Worth the $? You know a lot more about the air flow in these engines than I do. I was just saying that I had been told the same thing that Mitch was told, by the same person. I know Al has been around for a long time and trusted what he was telling me, but I'm not knockin' what you are saying either.
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| Sun Jul 24, 2011 2:00 pm |
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50fps
MMT 1000 Club
Joined: Tue Jan 13, 2009 6:42 pm
Posts: 2377
Location: West Coast Wisconsin
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Re: Bigger exhaust valves. Worth the $?
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| Sun Jul 24, 2011 5:41 pm |
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Jamie B.
MMT 1000 Club
Joined: Tue May 19, 2009 9:48 am
Posts: 2688
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Re: Bigger exhaust valves. Worth the $? So what size intake and exhaust valves you recomend going with with a big bore motor? Thanks
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| Sun Jul 24, 2011 6:23 pm |
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drake1
MMT Addict
Joined: Wed Jan 14, 2009 6:57 am
Posts: 659
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Re: Bigger exhaust valves. Worth the $? My gen is a big bore motor. It has 39 mm intake valves and seats and a 32mm exhaust valve and seat. These are bigger than the Briggs intake and half a mm smaller than the exhaust. Both the gen and Briggs have been on the flow bench. Gen lows better on intake and Briggs on the exhaust. We had to increase the gen exhaust valve and seat and weld up the outside of the exhaust port to increase the port size and it still will not flow better than the Briggs. We are going to attempt to open the port some more and see what happens. The ports make these little motors flow. Now I have not seen a Briggs yet that pulls like the gen out of the hole and through mid range. Just a little lazy on top.
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| Sun Jul 24, 2011 7:24 pm |
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50fps
MMT 1000 Club
Joined: Tue Jan 13, 2009 6:42 pm
Posts: 2377
Location: West Coast Wisconsin
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Re: Bigger exhaust valves. Worth the $?
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| Sun Jul 24, 2011 7:36 pm |
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cb5331
MMT Super Elite Member
Joined: Fri Dec 18, 2009 8:10 pm
Posts: 16915
Location: Rowlett, TX
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Re: Bigger exhaust valves. Worth the $?
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| Sun Jul 24, 2011 7:39 pm |
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pooldoo73
MMT F.E.
Joined: Tue Jan 25, 2011 5:47 pm
Posts: 886
Location: Plaquemine
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Re: Bigger exhaust valves. Worth the $? IM heads have larger exhaust valves.
_________________
18'x54"CC Hanko/ 36PD
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| Sun Jul 24, 2011 7:50 pm |
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pooldoo73
MMT F.E.
Joined: Tue Jan 25, 2011 5:47 pm
Posts: 886
Location: Plaquemine
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Re: Bigger exhaust valves. Worth the $? IM heads have larger exhaust valves.
_________________
18'x54"CC Hanko/ 36PD
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| Sun Jul 24, 2011 7:52 pm |
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craig
MMT Elite Member
Joined: Tue Jan 13, 2009 7:53 pm
Posts: 7515
Location: Chauvin
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Re: Bigger exhaust valves. Worth the $?
_________________
1750 GatorTail Extreme/Stage 3 37 GTR HD
Procrastination is a lot like masturbation. Sure it sounds great at the time but, in the end your only f--k--g yourself.
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| Mon Jul 25, 2011 12:17 pm |
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Jamie B.
MMT 1000 Club
Joined: Tue May 19, 2009 9:48 am
Posts: 2688
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Re: Bigger exhaust valves. Worth the $? Thats what i was thinking, thanks Craig.
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| Mon Jul 25, 2011 12:59 pm |
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