Tim D. Posted July 27, 2018 Report Share Posted July 27, 2018 My silicone gasket was fab until it was exposed to oil and heat and then it expanded in length by 20%. It's now in the bin Quote Link to post Share on other sites
colin3511 Posted July 27, 2018 Report Share Posted July 27, 2018 If you glue a standard cork gasket using something like 'tri-bond' you can take the cover off several times without replacing the gasket. I'm up to 11 times and zero leaks. I tried the silicon gasket with Wellseal and it moved all over the place and leaked. It's not in the bin (yet). Colin Quote Link to post Share on other sites
RogerH Posted July 27, 2018 Report Share Posted July 27, 2018 +1 for the cork gasket. Evostik will also hold it in place. Roger Quote Link to post Share on other sites
KiwiTR6 Posted July 30, 2018 Report Share Posted July 30, 2018 (edited) I've replaced my leaking cork gasket with another secured to the cover with 3 Bond 1104 and held in place with masking tape overnight whilst it cured. Then a light coat of Hylomar and into place it went, but time will tell if this is going to be effecive. The old gasket had been sealed to the cover with Evostick or similar and moved out of position providing several leaks points (nothing on the head face). Edited July 30, 2018 by KiwiTR6 Quote Link to post Share on other sites
TR NIALL Posted July 30, 2018 Report Share Posted July 30, 2018 That looks like an Alloy Cover next time buy the Wide Gasket from Rimmers or Moss,it’s not as high as your Gasket but twice as wide. Quote Link to post Share on other sites
KiwiTR6 Posted August 4, 2018 Report Share Posted August 4, 2018 (edited) That looks like an Alloy Cover next time buy the Wide Gasket from Rimmers or Moss,it’s not as high as your Gasket but twice as wide. Yes it's an alloy cover, the gasket was one of several I had purchased locally early in the piece before I started dealing with the UK specialists. It'll do in the meantime... Edited August 4, 2018 by KiwiTR6 Quote Link to post Share on other sites
SpitFireSIX Posted August 5, 2018 Report Share Posted August 5, 2018 I've replaced my leaking cork gasket with another secured to the cover with 3 Bond 1104 and held in place with masking tape overnight whilst it cured. Then a light coat of Hylomar and into place it went, but time will tell if this is going to be effecive. The old gasket had been sealed to the cover with Evostick or similar and moved out of position providing several leaks points (nothing on the head face). 20180715_105235_resized.jpg Hi, Nice n clean rocker box! How many miles on the engine & what oil? Cleanest I have seen for a long time. Cheers, Iain. Quote Link to post Share on other sites
KiwiTR6 Posted August 5, 2018 Report Share Posted August 5, 2018 Hi, Nice n clean rocker box! How many miles on the engine & what oil? Cleanest I have seen for a long time. Cheers, Iain. Hi Iain. Only 7,000km since a full rebuild. The PO was using Brad Penn 20W50 high zinc oil from memory, I am currently using Penrite HPR30 20W60 high zinc. Cheers Gavin Quote Link to post Share on other sites
yycdave Posted August 18, 2018 Report Share Posted August 18, 2018 Being from across the pond I'm not that familiar with the PI setup, however on the NA carb equipped cars the valve cover is connected to a very low vacuum (~1lb) connection on the carb which provides just enough vacuum to evacuate crankcase pressure. Without this evacuation it's very common to see leakage from the valve cover, in particular at the engine number stamping on the left side of the block. Here's how my SU's are configured; Strombergs will be similar and I assume the PI setup also has a vacuum port, so make sure that your cover is being adequately evacuated. Quote Link to post Share on other sites
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