The Triumph 2000 / 2500 / 2·5 Register Forum

Ok need help again . Just replaced the auto box on the engine. When engine revved up there is metallic high pitch noise , maybe the flexiplate is cracked ? . When the new box was fitted we heard the bush at the end of the crankshaft was missing and also the dowels. Box to be removed again , where can I get the dowels and the bush . Regards Bruce

In my fairly limited experience with cracked flexplates (2 on Triumph 2000s, 1 on a Morris Oxford) the noise produced was surprisingly deep, more a rumble than a high pitched noise, and it was more prominent under the no-load condition if I recall correctly from several decades ago. The gearbox being fitted without the bush and dowel (singular, not plural) seems quite an odd thing to do and I'd guess is related to the noise. Perhaps Chris Witor can supply?

David Withers wrote:In my fairly limited experience with cracked flexplates (2 on Triumph 2000s, 1 on a Morris Oxford) the noise produced was surprisingly deep, more a rumble than a high pitched noise, and it was more prominent under the no-load condition if I recall correctly from several decades ago. The gearbox being fitted without the bush and dowel (singular, not plural) seems quite an odd thing to do and I'd guess is related to the noise. Perhaps Chris Witor can supply?

Hi thanks for thr quick feedback . Going to the garage to listen to the problem am tomorrow. The box will be dropped away again to inspect for damage. I think Chris Witor is based in Wookey hole nr wells, is that correct ? I'll get dowels fitted but the main problem is sourcing the bush for the crankshaft to correctly mate to the spigot on the back of the torque convertor. Ps the engine and box are fitred to 1948 Triumph Roadster. Regards bruce

http://www.chriswitor.com/proddetail.php?prod=139543SH
or
http://www.chriswitor.com/proddetail.php?prod=151823SH

Assuming Mk1 engine, dependent on eng. no.

Dave B wrote:http://www.chriswitor.com/proddetail.php?prod=139543SH
or
http://www.chriswitor.com/proddetail.php?prod=151823SH

Assuming Mk1 engine, dependent on eng. no.

Hi thanks for the info . Will give Chris a ring am today , probably buy both versions just to be on the safe side . Best Regards Bruce

Would recommend fitting the strengthened flexiplate that Chris offers................
I have had two go, the original and a NOS one.
When the NOS one went it sounded rather like bottom end rattle but when engine was stripped nothing was found but hair-line crack founfd on the flexiplate.

Bruce wrote:

Dave B wrote:http://www.chriswitor.com/proddetail.php?prod=139543SH
or
http://www.chriswitor.com/proddetail.php?prod=151823SH

Assuming Mk1 engine, dependent on eng. no.

Hi thanks for the info . Will give Chris a ring am today , probably buy both versions just to be on the safe side . Best Regards Bruce

Hello all , went to see Chris Witor am today , very helpful and he has loads of stock . Highly recommended , he even went searching for a 2nd hand spare automatic back plate . Bought both crankshaft bushes , back plate , c/sunk bolts and other bits .Thanks again to the forum help

Best Regards Bruce

Bruce wrote:

Bruce wrote:

Dave B wrote:http://www.chriswitor.com/proddetail.php?prod=139543SH
or
http://www.chriswitor.com/proddetail.php?prod=151823SH

Assuming Mk1 engine, dependent on eng. no.

Hi thanks for the info . Will give Chris a ring am today , probably buy both versions just to be on the safe side . Best Regards Bruce

Hello all , went to see Chris Witor am today , very helpful and he has loads of stock . Highly recommended , he even went searching for a 2nd hand spare automatic back plate . Bought both crankshaft bushes , back plate , c/sunk bolts and other bits .Thanks again to the forum help

Best Regards Bruce

Just though , I have a new flex drive plate form Chris and I understand that I can just sandwich it between the existing flexiplate and the torque convertor . Chris advised there should be sufficient space to still bolt everything up ( i.e the additional flexiplate thickness can be accommodated in the existing gearbox and torque converter assembly) .

Regards Bruce