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I have some nicely reconditioned cast manifolds to fit on my TR8 to replace the cracked ones it has at present. I'm unsure whether to install them dry with just the gaskets or to also use assembly paste. I don't really want white paste splodging all over my lovely grey manifolds but I also don't want to have to remove them again if they leak. What's the best way for a clean job with no leaks?

Andy
1981 UK SPEC TR8
[img][IMG]http://i473.photobucket.com/albums/rr92/REPLIC8-2008/175-1.jpg[/img][/img] [img][IMG]http://i473.photobucket.com/albums/rr92/REPLIC8-2008/pics005.jpg[/img][/img]

From an Engineering prespective - if the recon manifold is square ie flat & the cylinderhead face is flat you shouldn't need any paste.
A good quality gasket will seal the faces when bolted up.
Use copper based 'coppaslip' on the studs though when assembled.

The original exhaust manifolds didn't have gaskets just bare metal to bare metal, only the FI cars did although it's recommended to put gaskets on if you have the manifold off. So with that in mind, unless your manifold is warped you shouldn't have any problems with just gaskets.


- - -TR7 Spider - - - 1978 Spitfire- - - - 1976 Spitfire - - 1988 Tercel 4X4 - Kali on Integra - 1991 Integra - Yellow TCT

Hi Andy,

When I bought my V8 conversion kit from S&S, they advised me to fit their tubular exhaust manifolds to the heads with RTV paste and <u>no</u> gaskets.

Over 20 years and they're still leak free.

Adam





TR7 V8 DHC Jaguar Solent Blue. 9.35cr Range Rover V8, Holley 390cfm, JWR Dual Port, 214 Cam, Lumention, Tubular Manifolds, S/S Single Pipe Exh, 3.08 Rear, 200lb Spax & PolyBushes all round, Anti- Dive, Strut-Top Roller Bearings, Capri Vented Discs & Calipers, Braided Hoses, 4 Speed Rear Cylinders, Uprated Master Cylinder & Servo, AT 14" 5 Spokes or Maestro Turbo 15" Alloys, Cruise Lights, S/S Heater Pipes, Replacement Fuel Tank. No Door Stickers. Mine since July 1986, V8 from 1991 courtesy of S&S V8 conversion and big brake kits.

Hi Andy,

I hope you are feeling a lot better now,

Never needed to use any paste on any manifolds I have ever fitted, would certainly use copperslip on all threads though, I know how lovley and original your car is so not really applicable but a head to manifold studs make life easier.

Cheers John


LIVE LIFE A QUARTER OF A MILE AT A TIME!

1976 Speke FHC Beauty

1979 3.5 FHC(STATUS PENDING!!)

1982 2.0 DHC NOW A 4.6,ON THE ROAD NOW KICKING AR5E !!!!

Andy,

I have four branch manifolds which I do use gaskets to make the seal - I have never found that I have needed to add any sort of exhaust goo to help.

The only thing, in agreement with John is to use copperslip on the studs and if you can get hold of them brass full nuts.

Regards
Ian

Ian Freeman
1979 TR8 DHC
Triumph Courier
Triumph owner for 31 years

<blockquote id="quote"><font size="1" face="Century Gothic, Verdana, Arial, Helvetica" id="quote">quote:<hr height="1" noshade id="quote"><i>Originally posted by john 215</i>

Hi Andy,

I hope you are feeling a lot better now,

Cheers John



<hr height="1" noshade id="quote"></font id="quote"></blockquote id="quote">

Hi John,
Getting there health wise, recovering from a heart attack I had in August, but hope to get some jobs done on the car soon and get out and about in it in the summer (if we get one!!).

Thanks for all the replies, looks like I'll be just using gaskets. I have some new brass nuts to attatch the downpipes as well. [:)]

Andy
1981 UK SPEC TR8
[img][IMG]http://i473.photobucket.com/albums/rr92/REPLIC8-2008/175-1.jpg[/img][/img] [img][IMG]http://i473.photobucket.com/albums/rr92/REPLIC8-2008/pics005.jpg[/img][/img]