JohnD Posted October 4, 2021 Report Share Posted October 4, 2021 I'm fitting my new engine, and as I like to 'blueprint' them, I'm matching the inlet and output head ports to the gasket, supplied by Rimmer's. And the fit is awful! This shows one end of the gasket, I've already matched the inlets. I hope you can see how much I will need to carve out the exhausts to stop them sticking out two or three millimeters into the flow!! My ports are not enlarged, just smoothed, and nothing like that much metal was removed. Are the formers used to make the gaskets worn out and have lost shape? Anyone else found such misshapen manifold gaskets? John Link to comment Share on other sites More sharing options...
Pete Lewis Posted October 4, 2021 Report Share Posted October 4, 2021 ive seen MK1 gaskets all misaligned stud holes if cut by a ribbon press theres not much to wear but obviously they are all over the place pete Link to comment Share on other sites More sharing options...
Iain T Posted October 4, 2021 Report Share Posted October 4, 2021 I think they are cut out using a blank and pierce tool using knives which are thin guage tempered steel strip formed to shape and held within groves in the top tool. The bottom is just a flat plate which can be made of various materials but softer than the knives. The bottom patten is sacrificial. We used to make lots of tools this way for interior trim and aluminium heatshields. Lots of things can happen including transfer tool holes being moved which can result in a part of the piercing being misaligned. Or it could be the tool was made from a c**p part as a template! Link to comment Share on other sites More sharing options...
Colin Lindsay Posted October 4, 2021 Report Share Posted October 4, 2021 The last timing cover seal I used was so misaligned it split when I tried to get it over all the studs, and similar with the diff casing gasket. I've not had any problems with gearbox gaskets so they must be better made. I've a few original engine gasket sets and they're great, they fit first time. Link to comment Share on other sites More sharing options...
PeteH Posted October 4, 2021 Report Share Posted October 4, 2021 Years ago, we could get the raw gasket, material and make our own, Kept sheets of it in the Ship Engine stores and made 90% of our jointing and gaskets, with a small ball peen hammer on the parent surface. Most of it came from Walkers "lion" works, in Woking. Pete. Link to comment Share on other sites More sharing options...
JohnD Posted October 4, 2021 Author Report Share Posted October 4, 2021 I didn't add that the bolt holes were poorly aligned as well! Link to comment Share on other sites More sharing options...
68vitesse Posted October 4, 2021 Report Share Posted October 4, 2021 Bought some rear diff casing gaskets from one of the main suppliers that where to small, got the usual reply no-one else has complained. Made my own for my "non standard" diff casing.😜😜😜😜 Regards Paul. Link to comment Share on other sites More sharing options...
JohnD Posted October 5, 2021 Author Report Share Posted October 5, 2021 The "no one else has complained" defence is one I fear I will be fobbed off with, which is why I'm raising it here. Gasket paper is readily available on eBay, in a range of thicknesses, I bought some recently. It's easy to make a gasket from that, by laying a sheet on the part and lightly tapping around the edges with a ball pein hammer - I'm sure you know this, Mathew! But the manifolds require a more robust gasket, peferably with a metal core. Rimmers have acknowledged my email of complaint, but not replied yet. John Link to comment Share on other sites More sharing options...
68vitesse Posted October 5, 2021 Report Share Posted October 5, 2021 Mk1 gasket all holes line up ok but original has reinforcing rings on end and middle holes and is 1.9mm thick repro 1.5mm thick. When buying NOS gasket sets I always check that the commonly used ones have not been replaced with repros. Regards Paul. Link to comment Share on other sites More sharing options...
JohnD Posted October 5, 2021 Author Report Share Posted October 5, 2021 They have replied, and asked for my invoice number, which I'm glad to supply. I've also suggetsed that they must have a cyklinder head in stock, would they try one of the gaskets on it? We'll see. JOhn Link to comment Share on other sites More sharing options...
daverclasper Posted October 5, 2021 Report Share Posted October 5, 2021 6 hours ago, 68vitesse said: but original has reinforcing rings on end and middle holes Yes I noticed those on my old one, which I replaced as leaking a bit on the 2 outer exhaust seals. Did wonder about replacement not having them?, and only 3, which were, 2 outer exh, and central inlet, as your photo Paul. Interested what the purpose of the copper rings/seals?. Link to comment Share on other sites More sharing options...
sulzerman Posted October 5, 2021 Report Share Posted October 5, 2021 I got a rotar arm at NEC classic car show couple years ago. Tried to fit, it was so tight on the spindle the plastic split. Complete waste of money 💰☹️ Link to comment Share on other sites More sharing options...
RogerH Posted October 6, 2021 Report Share Posted October 6, 2021 11 hours ago, sulzerman said: I got a rotar arm at NEC classic car show couple years ago. Tried to fit, it was so tight on the spindle the plastic split. Complete waste of money 💰☹️ Hi Paul, with the dozens of choices to buy ignition parts from it is a minefield out there. I would only ever buy from Martin Jay 'the Distributor Doctor' http://www.distributordoctor.com/ He does only quality stuff. Roger 1 Link to comment Share on other sites More sharing options...
JohnD Posted October 9, 2021 Author Report Share Posted October 9, 2021 To do Rimmer's justice, they have A/ offered me another gasket, and B/ tried one from stock on their own cylinder head. They found much less misfit than I did. So I've asked for the replacement and will try that on a spare head of mine. I'll tell what I find. Link to comment Share on other sites More sharing options...
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