Jump to content
Sign in to follow this  
TorontoTim

Piston Identification

Recommended Posts

Hi Knowledgeable Folk,

 

I have been given a number of parts, most of which are TR4. I'll post a list in a bit in case anyone needs them and is willing to source (free, except for shipping) from Canada!

 

But first, I need to confirm the set of pistons (and liners) that came in the box. They are used, and the pistons have the following identification marks stamped on them:

 

BHB (in a circle)

205498

M62

2

1 (Note: the 2 and the 1 may be related, but aren't quite the same size or same orientation, but they are fairly close to each other)

 

If this isn't enough information, I can post a photo, but thought I'd try just the numbers first...

 

Cheers,

Tim

Edited by TorontoTim

Share this post


Link to post
Share on other sites

Tim, that part number is a standard 86mm TR4 piston, not sure if the other numbers are adding some additional qualification though.

 

Stan

Share this post


Link to post
Share on other sites

Thank you clever people.

 

Well, I have 4 used ones with gudgeon pins and 4 matching liners. No idea if they are useful really, but if anyone wants them they are available for just the cost of getting them from Toronto.

Share this post


Link to post
Share on other sites

I might have a friend who could use these in a rebuild, Tim. I'll check over the next hour or so and let ya know.

Share this post


Link to post
Share on other sites

Yep, I'll take 'em, Tim. I'll send you details via pm.

Share this post


Link to post
Share on other sites

Good news, Don. Glad to help to help someone get their car back on the road (hopefully - I'll check the condition closely over the weekend).

Share this post


Link to post
Share on other sites

Just 90 degree turn the liners and they will go on for years.

Stuart.

Share this post


Link to post
Share on other sites

Yup the only real concern is probably the potential for a broken ring groove. These'll likely be running in a Doretti before the snow falls.

Share this post


Link to post
Share on other sites
Guest ntc

Just 90 degree turn the liners and they will go on for years.

Stuart.

Think you will find the pistons maybe oval.

Share this post


Link to post
Share on other sites

Think you will find the pistons maybe oval.

Well I took the original pistons and liners out of my 4a engine (with pretty high mileage on them) and gave them to one of our club members who was doing a budget rebuild of his TR4 engine and they have lasted him another 21 yrs with a 90 turn and a re-ring.

Stuart..

Share this post


Link to post
Share on other sites
Guest ntc

Well I took the original pistons and liners out of my 4a engine (with pretty high mileage on them) and gave them to one of our club members who was doing a budget rebuild of his TR4 engine and they have lasted him another 21 yrs with a 90 turn and a re-ring.

Stuart..

Low use as most cars get you are suspending the inevitable.

Share this post


Link to post
Share on other sites

Low use as most cars get you are suspending the inevitable.

 

I think we can say that about any collector's car, and it's probably true for every car the day they leave the dealer's lot!

Edited by Don H.

Share this post


Link to post
Share on other sites
Guest ntc

 

I think we can say that about any collector's car, and it's probably true for every car the day they leave the dealer's lot!

Don

Correct.

Share this post


Link to post
Share on other sites

In days gone by I knew of more than a few wet liner TR and Standard engines that had liners turned and turned again, rehoned with oversize rings, etc etc. Some of them covered six figure mileages, and I can think of one Vanguard estate (a farmer's truck) that had clocked quarter of a million on its rotated components . . . . .

 

Cheers

 

Alec

Share this post


Link to post
Share on other sites
Guest ntc

Alec/Stuart

I know of a few that have failed after 10k or less,tis why they sell them in sets with liners,oops I posted something sorry.

Share this post


Link to post
Share on other sites

Low use as most cars get you are suspending the inevitable.

Nope they have done another 50K plus since.

Stuart.

Share this post


Link to post
Share on other sites

The pistons in my 4A have 105W 49A STD stamped on them, anyone know what these are?

Share this post


Link to post
Share on other sites

qkingston ??

STD means standard size I imagine the other numbers have something to do with dimensions

Share this post


Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Restore formatting

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Loading...
Sign in to follow this  

×
×
  • Create New...

Important Information

Please familiarise yourself with our Terms and Conditions. By using this site, you agree to the following: Terms of Use.