Camshaft oil feed banjos

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JerryL770
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#1 Camshaft oil feed banjos

Post by JerryL770 » Thu Jun 13, 2024 8:33 am

S2 4.2l engine.
I have slight leaks from the camshaft oil feed banjos on the cylinder head so will replace the banjo washers.

SNGB have 4 different ones available. Eliminating the thin genuine one, the last one looks like a crushable washer. Is this going to be as effective as the much more expensive Goodrich washer?
Jerome Lunt
1970 S2 FHC - Dark Blue, Red Interior, MX5 Seats
2008 MX-5 NC PRHT - now gone :sad:

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#2 Re: Camshaft oil feed banjos

Post by mgcjag » Thu Jun 13, 2024 9:36 am

If you go non original you need to look carefully at the replacement part.... The stat o seal washers are thicker therefore the banjo bolt and its oil hole will be in a different position in the fitting...ensure the oil flow isn't restricted...Steve
Steve
69 S2 2+2 (sold) ..Realm C type replica, 1960 xk150fhc

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#3 Re: Camshaft oil feed banjos

Post by JerryL770 » Thu Jun 13, 2024 10:22 am

Thanks Steve.
I've adopted a belt n braces approach and bought the Goodridge and crushable washers and the longer banjo bolts. Trust I can stem any further leakage.

Needless to say, I won't be fitting Goodridge AND crushable washers :roll:
Jerome Lunt
1970 S2 FHC - Dark Blue, Red Interior, MX5 Seats
2008 MX-5 NC PRHT - now gone :sad:

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politeperson
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#4 Re: Camshaft oil feed banjos

Post by politeperson » Thu Jun 13, 2024 11:16 am

They often leak because the banjos have wear grooves.

I always remove the pipe from the car, clamp it gently in a vice, then face the sealing surfaces with a hand file before re-fitting with new washers. It needs to be really smooth to seal.
This usually works.
You always want to check that all is clear as well otherwise your cam(s) will have no oil.
Happened to Chris Rooke too, cost him a camshaft or 2 until he figured it out.
This has also happened to me twice.
Finishing off an S1 roadster

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#5 Re: Camshaft oil feed banjos

Post by Iansparky » Thu Jun 13, 2024 6:31 pm

I have just done a lot of research into the cam feed bolts and washers, the original washers are only paper thin allowing the hole in the banjo bolt to line up with the centre of the recess in the banjo, the goodridge washers especially are considerably thicker, this puts the hole off centre to the banjo and restricts the oil flow to the cams.
I ended up buying new bolts and washers from Rob Beere, his set up uses a standard copper washer between the bolt and banjo and a copper crushable washer between the banjo and head, the through hole in the bolt is positioned to allow for the thicker copper washer, to help the oil flow further the bolt is undercut where the cross hole is. Sorry no photos as mine are fitted, no leaks though and good oil flow to the cams.
Ian
1965 series 1 ots
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#6 Re: Camshaft oil feed banjos

Post by abowie » Thu Jun 13, 2024 9:50 pm

If you do decide to use the new oil feed pipe you might need to use longer banjo bolts.

https://www.sngbarratt.com/English/#/UK ... %20bolt%60
Andrew.
881824, 1E21538. 889457. 1961 4.3l Mk2. 1975 XJS. 1962 MGB. 1979 MGB.
http://www.projectetype.com/index.php/the-blog.html
Adelaide, Australia

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Paul bow
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#7 Re: Camshaft oil feed banjos

Post by Paul bow » Thu Jun 13, 2024 10:12 pm

Hi I did the same as Ian sparky above.. Rob Beeres item.
only difference was I used the Goodrich braided oil feed as well.
Used this on 2 different e types never had a leak.
Crash washer in the inside ie between the face of the head and the banjo, if my memory serves me right 8lb of torque..just enough to crush it…👍
Previously...S1 OTS E type (sold)
S1 2+2 manual. (Sold)
S2 rhd OTS full resto finished 8/23
S1 3.8 coupe (full restoration now sold)

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#8 Re: Camshaft oil feed banjos

Post by JerryL770 » Fri Jun 14, 2024 10:00 am

Thanks for the advices, guys.

I already have the flexible feed pipe fitted and now the longer bolts from SNGB. I will check the alignment of the hole in the bolt and adjust it if necessary, making sure no swarf/filings remain. I will make sure the faces are all smooth.
Jerome Lunt
1970 S2 FHC - Dark Blue, Red Interior, MX5 Seats
2008 MX-5 NC PRHT - now gone :sad:

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