andyhall
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Posts posted by andyhall
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10 hours ago, Andy Moltu said:
Have you mis-timed the cam?
These engines are non-interference so the valves & pistons won't meet if you get the timing wrong.
So you can really do one of two simple errors - time using no1 exhaust valve or set it so that no1 inlet is fully open say 105 degrees btdc rather than after. (105 is an example as many non-standard cams will have different numbers to 105)
+1 check the compression, especially if it appears to be spinning over slightly quicker than normal
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Hi Lee,
I have a new one complete, never fitted which is surplus to requirements that's been gathering dust.
Andy
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obviously the holes are in the top
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Hi
I have the Revington catch tank on my 6, fixes to the battery bracket and bulkhead.
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Hi,
I used this https://www.thespringstore.com/spring-calculator.html as tool to help, but at 10.25" free length that does seem high would have thought 8.5-9"
also found this https://www.tr-register.co.uk/forums/index.php?/topic/60959-tr6-spring-heights/
Andy
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Thanks Ian, that's close enough
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Hi,
Need to get some straightening work done on the front nearside of a friends TR6, he's based in Kent, any recommendations, local'ish would help.
Thanks
Andy
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Thanks John, will check it out.
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Hi,
Looking to replace the core plugs on my block and want to go for stainless but none of the usual suspects seem to offer one. Found a supplier that will sell them separately but needs a list of sizes, can anyone point me in the right direction.
Thanks
Andy
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10 hours ago, stuart said:
I have a stabiliser bar if you want one John.
Stuart.
So that's what it is! got one and never knew
Andy
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On 5/16/2022 at 12:56 PM, Motorsport Mickey said:
As Bob says should be ok.
If it’s any help I won the TR Register championship on a standard Triumph crankshaft with -20 mains and big ends ground to -60 ( yup).
With the crankshaft throw being offset ground on the big ends to increase the length of stroke. ( hence -60). The crankshaft was lightened and balanced and Nitrited also. The car won the championship the year after also after the bearings were replaced (as the norm with race cars.)
I did use a 6000 rev limit ( self imposed) with a 6500 rev limiter in case of “ red mist”, maybe you are thinking of increasing the rev limit. ?Mick Richards
Oh!…-60 shells ? Massey Ferguson is your friend.
Mick,
How does this work in practice, is the stroke increased at BDC, rod length & piston stock.
Andy
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21 minutes ago, ntc said:
In std you are right however many have been skimmed and many have modified cams I have seen contact made but not my work
I can vouch for this, when I stripped my race engine after it's 3rd failure you could see slight marking on 2 of the pistons
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Hi Mark,
My TR4a had a blue S.A.H head, had a plaque & ST2 stamped on it, should be plenty of info out there, google Sid Hurrell and see what comes up.
Andy
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Hi,
Trying to identify & find out the rate on my rear springs, they're red, 9.5" long and 15mm dia, only other ref on them is CHR 65 which has been hand written. Fronts are TT4102, ride height is fine but looking to go stiffer but I would like to know where I'm starting from.
Many thanks
Andy
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Do you know what is used? I may need to get new liners for my build and would consider this as an option, would assume the block liner face would need to be machined to match.
Andy
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On 8/26/2021 at 8:53 AM, Hamish said:
Hi Mike
they are going to run up the engine and an initial RR set up. They are also going to swap the engines over for me.
Bob I am afraid I don’t have that level of detail as I don’t have your skills I let the experts do what they know. It’s a Burgess race head.
the block is machined parallel to crank and the liners matched so doing away with fig 8Hi Hamish,
Looking good! Interested that they have done away with F8 gaskets, something I've not heard of before, did they use just a gasket sealant?
Andy
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On 10/20/2021 at 7:21 PM, hoffman900 said:
The torque saying should be revised:
Producing the most torque at the highest amount of RPM wins races
And how do we mere mortals go about achieving this??
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Max was playing chicken with the wrong man in the wrong corner, nothing to stop him taking the Leclerc line.
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They were new, the first was a bright silver and the second darker grey, I have them somewhere might see if can post a pic, and still working on the current tensioner.
Andy
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Thanks for the reply John. The first broke on my third test session on the new engine, just above the mounting, broke up and wrapped itself round the cam sprocket, causing the valve timing to jump, the second was a different material, again broke at the mounting but stayed in one piece and wore through the the cam cover spraying oil everywhere during qualifying at Snetterton last August . The oil pump drive actually failed after the cam chain had been repaired 10 minutes into qualifying at Donnington last year.
Andy
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On my new race engine, I lost 2 cam chain tensioners, a cam chain & the oil pump drive last year, steel crank didn't rev over 7k running with a Sterling damper from Vibration Free, any ideas ??
Andy
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Hi everyone,
I need to get hold of some technical measurements for my TR6, looking for the distance between centres crank to camshaft also crank centre to the top of the block.
many thanks
Andrew
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I agree, very interesting topic, Mickey< I've heard the term "offsetting" before but what does it actually mean?Andy -
Hi, I agree very interesting thread, Mickey, I've hear of the term "offsetting" before but what does it mean?
Andy
Silverback please read !!
in General TR Technical
Posted
You can add me to the list! message deleted
Andy