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My 1969 Devon - the EarlyBay.com inspiration!
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<blockquote data-quote="Matt_B" data-source="post: 450427" data-attributes="member: 12071"><p>Been using the van for a couple of years now since the rebuild. A few weeks ago, at Bugjam, the engine got a little hot and on inspection had cracked the cylinder heads <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite3" alt=":(" title="Frown :(" loading="lazy" data-shortname=":(" /></p><p></p><p>I've now replaced both heads, changed the fan to a twin port one as only a single port had been fitted! Replaced the pushrod tubes with wide mouthed ones as there was signs of rubbing, and installed some cooling tin that was missing.</p><p></p><p>I was also told by the engine builder he had used chromoly pushrods so to set the valve clearances at nearly zero, when taking the pushrods out I find them to be aluminium so have increased the clearance to factory settings.</p><p></p><p>I'm hoping these modifications will stop the engine overheating, and go on to give many hours of trouble free motoring.</p></blockquote><p></p>
[QUOTE="Matt_B, post: 450427, member: 12071"] Been using the van for a couple of years now since the rebuild. A few weeks ago, at Bugjam, the engine got a little hot and on inspection had cracked the cylinder heads :( I've now replaced both heads, changed the fan to a twin port one as only a single port had been fitted! Replaced the pushrod tubes with wide mouthed ones as there was signs of rubbing, and installed some cooling tin that was missing. I was also told by the engine builder he had used chromoly pushrods so to set the valve clearances at nearly zero, when taking the pushrods out I find them to be aluminium so have increased the clearance to factory settings. I'm hoping these modifications will stop the engine overheating, and go on to give many hours of trouble free motoring. [/QUOTE]
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