I took it to the garage today to have it fixed and they said I needed a gasket. I phoned Rimmers to make sure I had one before I took it and they told me there wasn't one for my models exhaust, only one for a later type. Is this true? I can't see one (or three) on the car now. Also is the brake master cylinder the same on a 1300 as an 1850? Thanks, Katy<br>
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1850 exhaust manifold leak
Re: 1850 exhaust manifold leak
The single line is the same across the whole range, if you have dual line and your 1850 com no is after 85001 it will be the same as the dual 1300 one.<br>
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No idea about gasketry I'm afraid
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No idea about gasketry I'm afraid
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Jon Tilson
- Posts: 1311
- Joined: Sat Mar 08, 2003 8:28 pm
It aint that simple....
In the early days 1850's came of of the box with a metal to metal seal twixt head an manifold. I'm not sure about later life but Ive got gaskets now between head an manifold for most but not all of my 1850's. The gaskets come in three parts. The centre one is the imponderable. The outer ones are the same as for a TR7 and are readilly available. The centre one is available from Rimmers so I'm told but Ive never bought one from them.<br>
That is different from the TR7 one where the 1850 manifold has the exhaust ports siamezed. On a TR7 the manifold has seperate outlets in the centre. The 1850 gasket is therefore square and joined at the bottom. the 7 one has two holes and isnt. You can use a 7 one on an 1850 if thats all you can get but be prepared to use some exhaust sealer at the bottom to join the gap up.<br>
If the flanges are all straight and clean and you have good threads and bolts or studs it does seal without gaskets with a smear of paste. Most manifolds have distorted a bit now and its easier to use the gaskets to take that out. else you risk stripping the threads in the ally head. I used studs in the head to help this a bit instead of bolts. Its a bit dearer but worth it.The flange to pipe joint often leaks too but will hold with decent manifold studs and bolts.<br>
Jonners<br>
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That is different from the TR7 one where the 1850 manifold has the exhaust ports siamezed. On a TR7 the manifold has seperate outlets in the centre. The 1850 gasket is therefore square and joined at the bottom. the 7 one has two holes and isnt. You can use a 7 one on an 1850 if thats all you can get but be prepared to use some exhaust sealer at the bottom to join the gap up.<br>
If the flanges are all straight and clean and you have good threads and bolts or studs it does seal without gaskets with a smear of paste. Most manifolds have distorted a bit now and its easier to use the gaskets to take that out. else you risk stripping the threads in the ally head. I used studs in the head to help this a bit instead of bolts. Its a bit dearer but worth it.The flange to pipe joint often leaks too but will hold with decent manifold studs and bolts.<br>
Jonners<br>
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Re: It aint that simple....
I think Moss sell the 1850 head to manifold gaskets mainly for use with the 4-branch manifold. Gives a much better seal.<br>
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I converted my old 1850 to studs and nuts rather than bolts to remove the risk of stripping the threads - worked a treat. I think Moss do a kit for that too.<br>
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<p><!--EZCODE LINK START--><a href="http://www.smifter1971.pwp.blueyonder.c ... >Smifter's Dolomite Sprint Website</a><!--EZCODE LINK END--></p><i></i>
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I converted my old 1850 to studs and nuts rather than bolts to remove the risk of stripping the threads - worked a treat. I think Moss do a kit for that too.<br>
<br>
<p><!--EZCODE LINK START--><a href="http://www.smifter1971.pwp.blueyonder.c ... >Smifter's Dolomite Sprint Website</a><!--EZCODE LINK END--></p><i></i>
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