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Search: Posts Made By: mblab
Forum: The Board 03-16-2018, 08:00 AM
Replies: 17
Views: 1,833
Posted By mblab
Re: spiral piston pin keepers

One thing I haven't seen mentioned here - I found it impossible to install the keepers until I pushed the pin into position in the piston. That gave the keeper something to butt up to and then the...
Forum: The Board 12-08-2017, 12:47 PM
Replies: 4
Views: 624
Posted By mblab
Re: Triumph Cams

You'll want to .060" between the flywheel and the cam lobe at their closest point.
Forum: The Board 12-02-2017, 08:23 AM
Replies: 4
Views: 624
Posted By mblab
Re: Triumph Cams

There's no reason it won't work. If you don't know about timing the cams, do some research and spend the time to learn to get it right. There's a lot of information out there. And check valve/ piston...
Forum: The Board 11-25-2017, 05:30 PM
Replies: 24
Views: 3,023
Posted By mblab
Re: Exhaust clamps

I've seen springs used but in my experience, anytime I've not had the pipes secured in at least 3 places (head, mid and mufflers) the spigots will work loose and eventually wallow themselves out. For...
Forum: The Board 11-24-2017, 06:43 AM
Replies: 24
Views: 3,023
Posted By mblab
Re: Exhaust clamps

Thanks for the responses. I've got the big hideous alu clamps now on the race bike. They look ridiculous and I hook the inside of my knee on them while hanging off. Getting nice grill marks on my...
Forum: The Board 11-23-2017, 05:43 PM
Replies: 24
Views: 3,023
Posted By mblab
Exhaust clamps

I'm looking for an alternative to the Triumph "starburst" clamps used at the ex pipe/ head connection. I've seen simple heavy steel clamps used on Ironheads and Panheads. Anyone know what size pipes...
Forum: The Board 01-05-2017, 08:28 AM
Replies: 12
Views: 1,349
Posted By mblab
Re: Where do you British bike guys get your crankshafts ground?

I ship my Triumph cranks to Mile High in Denver in a medium USPS box. Flywheels need to be removed, but it is about $15.
Forum: The Board 06-23-2016, 06:34 AM
Replies: 9
Views: 1,571
Posted By mblab
Re: Pre Unit camshaft choice

I like my 71 with a T140 intake. Be aware that you might have to skim the flywheel for clearance on a higher lift cam. I made sure I had .060" between the cam and flywheel.
Forum: The Board 12-08-2015, 06:44 AM
Replies: 51
Views: 5,212
Posted By mblab
Re: '76 Bonneville restore

MAP Cycle. Best gaskets I've ever used.
Forum: The Board 05-07-2015, 05:59 AM
Replies: 14
Views: 1,717
Posted By mblab
Re: 750 Triumph wet sumpin?

Aftermarket oil pump aside....
If you still have the stock pump on it, take it apart, clean it well, and reseat the balls- place the balls in their chamber and with a brass punch, give them a good...
Forum: The Board 03-15-2015, 07:59 AM
Replies: 15
Views: 1,488
Posted By mblab
Re: Cheap Battery Advice-Triumph

I've got a similar setup to what you described. Pazon, 60w headlight, tail....
I use an inexpensive ATV/pitbike battery, smallest one I can find and it works fine. Keep in mind that even the most...
Forum: The Board 03-06-2015, 05:45 PM
Replies: 35
Views: 3,888
Posted By mblab
Re: Triumph blew a piston and I don't know why

Someone way smarter than me has suggested on numerous occasions that oil in the combustion chamber is very effective at leaning a fuel/air mixture.
May not be the only reason it failed but probably...
Forum: The Board 01-01-2015, 10:08 AM
Replies: 44
Views: 5,791
Posted By mblab
Re: Checked out the crank....NO SLUDGE TRAP!

How much does sludge weigh? What if there were no sludge in the trap? What would be taking up that space? Oil? OK, how much does oil weigh?
Probably not enough difference here to worry about. IMO.
...
Forum: The Board 11-02-2014, 06:46 AM
Replies: 52
Views: 5,577
Posted By mblab
Re: Modern Canister Filter on Triumph

Tony, I have no desire to get into a pissing match with you, the poster asked for people that run filters to respond to his question. It's a free (sort of) country - if you don't want to use a...
Forum: The Board 11-01-2014, 08:16 AM
Replies: 52
Views: 5,577
Posted By mblab
Re: Modern Canister Filter on Triumph

I've had a return side filter on my 650 since 2001.
The cases were split and ST cleaned for the first time around 2008. Was about half full, but considering the motor was about 37 years old, not...
Forum: The Board 07-06-2014, 07:53 AM
Replies: 56
Views: 6,794
Posted By mblab
Forum: The Board 06-26-2014, 03:42 PM
Replies: 17
Views: 3,439
Posted By mblab
Re: '69 Single Carb Head on '68 bottom end, tappet blocks?

There are several different tappet blocks, depending on year or more accurately serial #. At this point 40 some odd years on who knows what might be in there? My advice would be to match the tappet...
Forum: The Board 06-08-2014, 08:16 AM
Replies: 335
Views: 792,421
Posted By mblab
Re: Home made workshop tools

Spent rifle casings work well for hole punches.
Mike
Forum: The Board 02-09-2014, 08:20 AM
Replies: 3
Views: 863
Posted By mblab
Re: triumph bonneville camshaft compatibility

The 71 intake cam has no provision for the crankcase breather that your 63 will need.
I've heard of some people drilling these cams to make them work, not tried it myself.
If you do use it, you...
Forum: The Board 12-26-2013, 07:06 PM
Replies: 13
Views: 1,535
Posted By mblab
Re: exhaust studs coming loose on pre unit

If the spigots are wallowed out now, chances are you won't be able to get them to stay tight for long periods of time.
The answer is to mount the exhaust pipes in 3 places. 1. At the head. 2....
Forum: The Board 08-26-2013, 07:21 AM
Replies: 5
Views: 1,463
Posted By mblab
Re: Chrome removal for the lazy

Have you tried it on alloy parts that have been plated?
Forum: The Board 07-20-2013, 07:19 AM
Replies: 8
Views: 1,403
Posted By mblab
Re: Fresh build t140 gear change problems

You say you put a 650 outer cover on it, but didn't indicate if you changed the plungers. 5 speed are different than 4.
I don't think anything changed in the kickstart, so no ideas there.
Mike
Forum: The Board 06-29-2013, 07:30 AM
Replies: 29
Views: 3,936
Posted By mblab
Re: exhaust pipes: bigger OD or not?

Reverb-
You're getting good advice re: staying with smaller diameter pipes. Unless you're going to run the motor at 7k all the time, 1 3/8 or 1 1/2 is the way to go.

TSX was mostly a styling...
Forum: The Board 06-08-2013, 06:10 AM
Replies: 16
Views: 1,845
Posted By mblab
Re: Triumph stator not centered

Too late for you now, but if you had the studs out, try switching positions of the long ones. They sometimes seem to like to go back where they were originally.
Mike
Forum: The Board 04-26-2013, 08:28 PM
Replies: 7
Views: 2,173
Posted By mblab
Re: triumph 650 and bsa 650 pipes

I measured a couple of Triumph push in spigots. Got 1.375 and 1.378"
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