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Phil 850
 Post subject: Push rod length
PostPosted: Wed Jul 01, 2020 9:21 pm 
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Location: Western Sydney
I’m building a 1275 and have a bulk lot of pushrods that a friend gave me.
Is there a difference in length from small bore to large bore engines.
All of the pushrods measure approximately 205mm overall.
They all have a little teat on the end from the cam follower. Can these be ground and reused assuming the length is ok.
While testing the brains trust, what cam followers should I buy ?

Phil

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drmini in aust
 Post subject: Re: Push rod length
PostPosted: Wed Jul 01, 2020 11:12 pm 
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You can grind that little teat off.

PM sent re other questions.

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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R. :mrgreen:
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Phil 850
 Post subject: Re: Push rod length
PostPosted: Thu Jul 02, 2020 10:02 pm 
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Location: Western Sydney
Thanks Kev.
I have looked at John Smidt parts book for push rods and it lists 12A250 for 850, 998 & 1098 engines and AEG314 for 1275 including cooper S.
Does anyone know what the length of a 1275 push rod should be.
Apart from the ones I have that are ~205mm I have 7 that are ~220mm.

Phil

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drmini in aust
 Post subject: Re: Push rod length
PostPosted: Fri Jul 03, 2020 6:59 am 
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Mine are 222mm overall.

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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R. :mrgreen:
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Phil 850
 Post subject: Re: Push rod length
PostPosted: Fri Jul 03, 2020 8:26 pm 
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998cc
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Joined: Fri Aug 30, 2013 8:59 pm
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Location: Western Sydney
I just lined up the two lengths that I have and the short ones are 214mm and the long ones are 220mm.
So, about the same as what Kevin has measured.
As I only have 7, does someone have 1 or a set they want to sell :)

Phil

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drmini in aust
 Post subject: Re: Push rod length
PostPosted: Fri Jul 03, 2020 9:06 pm 
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I have some spares I will send you one.

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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R. :mrgreen:
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Phil 850
 Post subject: Re: Push rod length
PostPosted: Sat Jul 04, 2020 2:06 pm 
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998cc
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Location: Western Sydney
Kevin
Thank you for your generous offer.
Below is a photo of the push rods that I have.
The ends are “bulkier” than the other rods.
You may be able to confirm that these are in fact 1275 push rods before I take up your offer.
Attachment:
BB72D9A6-8663-4C31-8035-DC5A4F00D171.jpeg


Regards
Phil


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drmini in aust
 Post subject: Re: Push rod length
PostPosted: Sat Jul 04, 2020 10:31 pm 
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I will take pics in the morning.
Edit-
I have several like those with the rounded top, also another which is tapered at top.
All are BMC ones not aftermarket.
All measure about 222mm overall. 1275 length.
I have some small bore pushrods also.

I have a pic on my phone, PM me your mobile and I'll send it.

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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R. :mrgreen:
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