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| T3 Sport / Touring Forum For the discerning Hinckley Sporting Enthusiasts. Open to all lovers of the original T3 Sport Models including the Trident, Sprint, Sprint Exec, Daytona, Trophy, and Speed Triple. |
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09-19-2005, 02:12 PM
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#1 (permalink)
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Senior Member
250 Grand Prix
Join Date: Sep 2004
Location: San Francisco area
Posts: 103
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my dealer told me that late carbureted sprints and early fuel-injected ones tend to have soft valves that need frequent shimming. i had assumed they would bed down eventually.
how often do you guys and gals check valve lash?
tia.
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09-19-2005, 06:13 PM
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#2 (permalink)
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Senior Member
SuperStock Favourite Bike: '95 Sprint
Join Date: Jan 2005
Location: San Francisco
Posts: 268 Other Motorcycle: Street Triple Extra Motorcycle: Speed Four
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I'm not sure what they mean by "late" carbureted models, but I just finished the second valve adjustment on my '95. After 27,000 miles, I've adjusted a total of 2 valves (both exhaust) -- one shim replaced last time, one this time. Neither were far out of range either.
My experience and that of other owners I know is that the valve clearances don't move much on the T3's.
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09-19-2005, 09:11 PM
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#3 (permalink)
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Senior Member
Powerbike Favourite Bike: 1998 Thubderbird Sport
Join Date: Apr 2003
Location: I-da-ho
Posts: 308 Other Motorcycle: 1996 Sprint Extra Motorcycle: 1997 T595 Daytona
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On my '96 at 16,000 miles and the 2nd valve check all were within specs. My understanding is that the interval is 12,000 miles with the first at 6,000.
__________________
Speed is good. It is way better to be shot out of a cannon, than squeezed out of a tube. That is why God made motorcyles.
My album
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09-20-2005, 10:07 AM
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#4 (permalink)
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Senior Member
Formula Extreme Favourite Bike: '98 Triumph Sprint Ex.
Join Date: Mar 2002
Location: South Florida
Posts: 931 Extra Motorcycle: '02 Kaw Ninja 250
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I've heard just the opposite, that the T-300 engines, and everything in them, are overbuilt and rugged. I haven't had to change a shim in a couple of years. It seems to have bedded in nicely at 78,500 miles.
I check valve clearances every 12,000 miles, once a year.
j98sprint
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09-29-2006, 07:26 AM
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#5 (permalink)
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Senior Member
Grand Prix 500 Favourite Bike: Triumph Sprint ST 955 '01
Join Date: Nov 2004
Location: Bulgaria
Posts: 132
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Before 2000km. my bike became to start hard (going off if I don't throttle, until it comes to normal temperature) and I start to wonder what is it. Then I remember that I never check the valves (the bike has covered 77000km.).
When I finally check the valves - what to see - all exhaust valves are O.K., BUT all intake valves are NOT - the 5 of them was with zero tolerance  , just one was 0,10mm. I change the shims twice to get them to correct tolerance 0,15mm. When I'm doing it I start to think that intake valves are soft. I have no other explanation, because the other exhaust valves was just fine.
I hope there is no damage on my intake valves because now my bike is running fine and became to start easy. What do you think?
:???:
[ This message was edited by: roadrunsl on 2006-09-29 05:38 ]
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09-29-2006, 01:20 PM
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#6 (permalink)
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Senior Member
SuperSport Favourite Bike: '98 Sprint Executive
Join Date: Dec 2003
Location: Lincoln, NE
Posts: 1,066 Other Motorcycle: '73 BMW R75/5 &'78 R100/7 Extra Motorcycle: '01 Suzuki DRZ400
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At 45,000 miles I've changed 4 shims. I keep track of the clearances and several of the valves have barely changed. Nothing hammers valves and seats like high rpm and I visit 9,000 rpm regularly, so I'd say the valve train is very durable.
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09-29-2006, 03:53 PM
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#7 (permalink)
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Senior Member
SuperSport Favourite Bike: 1995 Triumph Speed Triple
Join Date: Jun 2005
Location: New York
Posts: 1,294 Other Motorcycle: 1972 Trident T150V
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I completely agree. While I don't believe in the term "overbuilt" (I prefer well engineered :-D ), these engines are very solid.
I've check my 95 speed triple's valves once (at 20k, the previous owner did it at 6k). No adjustment needed.
Oh and PS- there's nothing "soft" about Triumphs!
__________________
Travis
Albany, NY
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09-11-2007, 02:37 AM
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#8 (permalink)
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New Member
Newbie Favourite Bike: anything 885cc with carbs
Join Date: Aug 2007
Location: geelong aust.
Posts: 2 Other Motorcycle: tbird 98 Extra Motorcycle: sprint sport 98
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t 300 inlet valves
i have two bikes with t300 engines 1 1998 tbird after 100,000k inlets kept closing up untill no small enough shims available.remove head replace inlets ex valves all good just lap in.now 175,000k inlets dont move ex still un touched.most valve failures come from mod. exhausts without jet adjustments. but there where some t300s with soft inlet valves ,just inlets. no 2 1998 sprint sport never had a shim changed
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09-12-2007, 05:22 PM
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#9 (permalink)
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Member
Grand Prix 125
Join Date: Dec 2005
Location: New Jersey
Posts: 39
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Intake valves.
My 95 SpeedTriple just rolled over 72,000 miles. At the last valve service interval I installed the smallest shim Triumph lists and still did not get it within specs on one of the intakes. Several of these have been closed right up at every service interval since I bought the bike new. I am now in the process of trying to find someone who has done one of these cylinder heads (no luck so far). Meanwhile, I continue to ride the wheels off of it as i have done since i got it. When the snow flies the job will commence!
__________________
MBW.
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09-12-2007, 05:36 PM
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#10 (permalink)
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Immoderate Moderator
Site Supporter SOTP Vintage Series Favourite Bike: '04 Sprint RS
Join Date: Jul 2007
Location: Austin, TX
Posts: 7,936 Other Motorcycle: Dead '96 Trident in NYC Extra Motorcycle: '77/'82 Suzuki GS550/650
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Huh. I thought I had already posted here, but I guess not....
I had my valves done last year. I was not charged for shims, & no shims were mentioned in the paperwork, so I'm not sure if they changed any. That was at 32,000 miles. While taking my motor apart to chase down the coolant leak that happened at 43k, I checked valve clearances: most were at the open end of the spec, a couple were in the middle, & none were at the tight end.
My motor has its share of problems, but soft valves don't seem to be among them.
Cheers,
-Kit
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