Mr Blue Sky Posted March 14, 2020 Report Share Posted March 14, 2020 Hi All, my cylinder head for my TR3 went in for some work recently, valve seats, guides, valves, gas-flowing and a small repair. I neglected to remove the In/Ex manifold studs before sending it to the shop and I didn't take pictures of what went where. I can work it with a bit of trial and error, but thought I'd ask if anyone on the forum had a sketch showing the layout? It's a 4A head but with standard TR3 inlet/exhaust manifolds. Regards, Laurence Quote Link to post Share on other sites
BlueTR3A-5EKT Posted March 14, 2020 Report Share Posted March 14, 2020 Stud, manifold, 2 1/16" upper 4 posn - Use with small butterfly clamp. Stud, manifold, 2 3/8" lower centre 2 posn - use with big butterfly clamp. Stud, exhaust manifold each end 2 posn NB - if no lifting bracket is fitted at rear. OR When lifting bracket is fitted. Stud, exhaust manifold front lower end 1 posn. Stud, exhaust manifold, 1 5/16" lower rear, use with lifting eye. Use 3/8" UNC brass nuts if you chosse, rather than original steel type. https://www.spaldingfasteners.co.uk/3-8-unc-brass-manifold-exhaust-nuts/ Cheers Peter W Quote Link to post Share on other sites
Mr Blue Sky Posted March 14, 2020 Author Report Share Posted March 14, 2020 Peter, many thanks for sending this through and for the advice on brass exhaust manifold nuts - we used to use them on series 3 & lightweight land rovers when I was in the Marines. Regards, Laurence Quote Link to post Share on other sites
john.r.davies Posted March 14, 2020 Report Share Posted March 14, 2020 (edited) IMHO, brass is too soft, and Bronze preferable: https://www.ebay.co.uk/itm/Silicon-Bronze-UNC-Nuts/174006437094?var=472806035811&hash=item28839784e6:m:mTUZ0X6KvffDH_doUQnB0DQ JOhn Edited March 14, 2020 by john.r.davies Quote Link to post Share on other sites
RobH Posted March 14, 2020 Report Share Posted March 14, 2020 The brass manifold nuts on my 3A were on it when I got it and seem fine. They are around twice the depth of steel nuts though which probably compensates for lower strength. I thought they were standard as I had similar on my old AH Sprite back in the day. Quote Link to post Share on other sites
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