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Post by twostrokebrit on Nov 5, 2017 23:13:19 GMT 1
I wonder why Yamaha made the cylinders left and right when they could of been a single casting ,
i beleive the TZ is a single unit .
i dont see a cost saving ?
I asked this on the US site as well.
cheers Mark
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Post by bare on Nov 6, 2017 1:06:20 GMT 1
:-) TZ cyls were unit cast Because they could then get the max size possible transfer port ducting in there.
Only one casting wall Not 2 and zero airspace seperation.. a well worth the effort difference in a designed for race engine.
Siamesed Cyls are Mo' Expensive to mfg Not less.
Street cyls are lesser products. so Mfg Cost compromises could easily be made.
Take a "good" Look at either LC or Valvie barrels. The external Transfer duct bulges are impressively Huge, intentionally so, for impressing the punters
Yet the inner side hidden ones are barely there visible.
Yet Both ducts Must be equal sized internally. Lotsa Marketing Bumph happening.
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Post by aid22 on Nov 6, 2017 11:37:59 GMT 1
Very interesting Bare. I also wondered why TZ's have Siamese cylinders, and is it possible to use them on an LC?
Regards, Aid.
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Post by dusty350 on Nov 6, 2017 18:00:15 GMT 1
Hi Aid A few guys on the forum have Tz cylinders on their Lc's. Veg, and Trubrit are 2 I can think of  Dusty  |
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Post by aid22 on Nov 6, 2017 18:10:22 GMT 1
Thanks Dusty, I would love to see an Lc engine with that mod. I am still not sure on the way I am going to go with my build at the moment.  But I do think if I went TZ route I would have to sell my CB900FA.  Best regards, Aid. |
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Post by dusty350 on Nov 6, 2017 18:23:33 GMT 1
Veg has certainly done a build thread in the resto section. Not sure if Trubrit has ? Dusty |
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Post by bare on Nov 6, 2017 19:21:05 GMT 1
Yesss TZ cyls are sometimes fitted.
But it's a double edged sword. More power than a 'stock' 350. But V pricey and short lived too
TZ cyls are chrome plated and they were intended to run single ring pistons .. never intended for either street usage OR many miles
At 35 years on, Only Hoarded items are available.. so pricings can be a shocker.
Also it's not difficult to get Mo' power out of a Valvie barrel these days.
They Look Trick though.
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Post by midlifecrisisrd on Nov 6, 2017 19:32:15 GMT 1
Did Dean from metmachex not have a tz cylinder on his LC
I'd say they were separate for service/warranty cost reasons
Let's face it if/when it had a blow up and was under warranty they would only change one cylinder.
Even the aircooled bikes were individual cylinders where you may think that a mono cylinder would help dissipate heat away from the centre
Steve
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Post by oldelsieboy on Nov 6, 2017 19:59:37 GMT 1
Thanks Dusty, I would love to see an Lc engine with that mod. I am still not sure on the way I am going to go with my build at the moment. But I do think if I went TZ route I would have to sell my CB900FA. Best regards, Aid. Don't mess around with just the top end, fit the complete motor  OEB |
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Post by bezzer on Nov 6, 2017 20:03:43 GMT 1
Thanks Dusty, I would love to see an Lc engine with that mod. I am still not sure on the way I am going to go with my build at the moment. But I do think if I went TZ route I would have to sell my CB900FA. Best regards, Aid. Don't mess around with just the top end, fit the complete motor OEB That is absolutely awesome OEB!, TZ Motor scarcer than a scarce thing!! |
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Post by barney on Nov 6, 2017 20:54:25 GMT 1
Thanks Dusty, I would love to see an Lc engine with that mod. I am still not sure on the way I am going to go with my build at the moment. But I do think if I went TZ route I would have to sell my CB900FA. Best regards, Aid. Don't mess around with just the top end, fit the complete motor OEB Awesome!! wheres the kickstart though ?😂😂😂😂 i owned a few tz 250s wished I kept them all now,hey ho |
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Post by aid22 on Nov 6, 2017 21:06:29 GMT 1
Thanks Dusty, I would love to see an Lc engine with that mod. I am still not sure on the way I am going to go with my build at the moment. But I do think if I went TZ route I would have to sell my CB900FA. Best regards, Aid. Don't mess around with just the top end, fit the complete motor OEB Point made very well indeed! Swiftly taken heed.  |
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Post by bezzer on Nov 6, 2017 21:28:11 GMT 1
Anyone got a TZ engine lying about??? 😁
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Post by twostrokebrit on Nov 7, 2017 3:18:52 GMT 1
i am glad i asked now |
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Post by Bryan H on Nov 7, 2017 20:06:56 GMT 1
Anyone got a TZ engine lying about??? 😁  How about this one....with separate cylinders and heads Ferry Brouwer in Holland makes these. Fits TZ and LC's although you'll probably need a very understanding bank manager  |
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Post by Tobyjugs on Nov 7, 2017 20:12:46 GMT 1
I thought Ferry has stopped with all this
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Post by bezzer on Nov 7, 2017 20:21:35 GMT 1
Anyone got a TZ engine lying about??? 😁 How about this one....with separate cylinders and heads Ferry Brower in Holland makes these. Fits TZ and LC's although you'll probably need a very understanding bank manager That is like liquid cooled porn brother!!! |
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Post by Bryan H on Nov 7, 2017 20:31:48 GMT 1
Spoke to him late last year and they were still available. I know a couple of people who use them in their race bikes
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Post by 4l04ever on Nov 7, 2017 20:33:42 GMT 1
Anyone got a TZ engine lying about??? 😁 How about this one....with separate cylinders and heads Ferry Brower in Holland makes these. Fits TZ and LC's although you'll probably need a very understanding bank manager Those cylinders would be nice on a 3 or 4 cylinder engine.... |
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But I do think if I went TZ route I would have to sell my CB900FA. 
