Mark B Posted May 11, 2018 Report Share Posted May 11, 2018 7 hours ago, Ian Foster said: Mark I like the look of your air box and can see that you have tried to address supplying equal air feed to each carb. Triumph tried this with many different versions of tubes, holes and lumps on the filter casings, but never really nailed it, in my opinion. I am considering something similar on my Mk2 GT6 to replace K&Ns. Was it a custom fabrication job ? Hi Ian I modified a 2500s air box but when I make another for my mk2 gt6 also on HS6 carbs it will be easier to make it from mild steel or ally sheet, as in the end I changed and reshaped most of the original box to get it to fit after increasing the intake diameter etc. Link to comment Share on other sites More sharing options...
Roger Posted May 12, 2018 Author Report Share Posted May 12, 2018 Engine Autopsy: I have never owned a saloon so I do not have the 2000/2500 parts catalogue etc. Question: Could this cylinder head gasket be original from the factory? I found a part number on it: 207102 Found another number also: AE350. I´m just waiting for the bad news, but so far so good… There are very few signs of wear on this engine. And I have no idea what the blue stuff is. Link to comment Share on other sites More sharing options...
Anglefire Posted May 12, 2018 Report Share Posted May 12, 2018 Blue stuff looks to me like hylomar sealant- which I didn’t think was required on cylinder heads - but happy to be wrong Link to comment Share on other sites More sharing options...
Roger Posted May 12, 2018 Author Report Share Posted May 12, 2018 2 minutes ago, Anglefire said: Blue stuff looks to me like hylomar sealant- which I didn’t think was required on cylinder heads - but happy to be wrong Thanks for your input. It is kind of liquid, like grease, fluid, not hard. Link to comment Share on other sites More sharing options...
Pete Lewis Posted May 13, 2018 Report Share Posted May 13, 2018 Fit copper gaskets dry they need to grip , anything slippy will end up failing, is that some blow by between 3 and 4 ? On refit make sure the washers are flat not deformed by the nut hard or hd washers are about it solves this saga .or you loose torque as the washers deform. A small smear around the rocker feed oil hole at the rear is all thats really needed to stop that seeping. Pete Link to comment Share on other sites More sharing options...
Roger Posted September 4, 2018 Author Report Share Posted September 4, 2018 Hi All! I'm dismantling my 2500 PI engine. How do I remove the sleeve in front of the oil thrower disc and the crankshaft sprocket? WM just mention "withdraw sleeve and oil thrower disk". Do I need a tool for this? Thanks in advance! /Roger. Link to comment Share on other sites More sharing options...
thescrapman Posted September 4, 2018 Report Share Posted September 4, 2018 Remove the chain then carefully put a puller on the crank gear and pull the whole assembly off Link to comment Share on other sites More sharing options...
Roger Posted September 4, 2018 Author Report Share Posted September 4, 2018 7 minutes ago, thescrapman said: Remove the chain then carefully put a puller on the crank gear and pull the whole assembly off Thanks a lot for your quick reply! Have to buy a puller... Link to comment Share on other sites More sharing options...
Nick Jones Posted September 4, 2018 Report Share Posted September 4, 2018 Shouldn't be tight. Bit of tapping with a brass or aluminium drift may get it moving. Nick Link to comment Share on other sites More sharing options...
Pete Lewis Posted September 5, 2018 Report Share Posted September 5, 2018 a gentle pry behind the gear should start it to move is not a pressed on fit its probably just a bit of oil stick thats holding they can pull off with the fingers if theres any seal wear refit it reversed there may be a lead on chamfer for seal lip, just replicate to make it double ended pete Link to comment Share on other sites More sharing options...
trigolf Posted September 6, 2018 Report Share Posted September 6, 2018 Hi Ian. Slight thread drift, but looking at your pic - does the exhaust manifold have Zircotec treatment? I would be interested to hear if it helps keep under bonnet temp down. Gav. Link to comment Share on other sites More sharing options...
JohnD Posted September 6, 2018 Report Share Posted September 6, 2018 The VAST majority of the heat under the bonnet comes from the radiator. The internal combustion engine is grossly inefficient, even the latest, 2018, designs can only achieve 40% thermal efficiency. so Our old engines may be only 20% efficient. All the rest of the energy is thrown away, as heat, with about 20% going down the exhaust and 40% through the radiator. Most of the exhaust heat is lost in the gases. Sure, the hot pipes can scald other items nearby, by radiation, but they contribute nothing to under bonnet heat! Zircotec, etc, are used to keep heat in the exhaust gases, to accelerate them out and assist cylinder filling, they won't cool the under bonnet. The only thing that will do that is to move the radiator to the back, and yes, I've done that. John Link to comment Share on other sites More sharing options...
Roger Posted March 31, 2019 Author Report Share Posted March 31, 2019 On 08/05/2018 at 19:51, Nick Jones said: You need to be a little careful with that inlet manifold. While most of the Mk2 heads have the same port spacing, some years of US models (TR250? TR6? not sure exactly) are different. I have no idea why! They would have been for CD175 carbs though have a feeling that stud pattern for CD175 & HS6 is the same. The other point to watch is though a manifold from a 2500S saloon will definitely fit the head, the face that mates to the head is machined at an angle so that the carbs sit more or less horizontal in a saloon - which has the engine tilted at ~ 6º. This means that the manifold tips up at about 6º when mounted on a vertical engine (like Vitesse) and adds to carb/bonnet clearance problems. If using SUs you need the shorter dashpots from a Dolomite Sprint. Hi All , @Nick Jones is there any chance to find out if this TR250 inlet manifold on ebay is one of those that will fit my 2500 PI engine by looking at the part number that can be seen on one of the photos? TR250 inlet manifold, ebay I guess the TR250 did not have the engine tilted 6 degrees, that would be a benefit. If it fits? Thanks in advance! Br Roger. Link to comment Share on other sites More sharing options...
Guppy916 Posted April 2, 2019 Report Share Posted April 2, 2019 Roger I have a inlet manifold off of a 2500 Saloon first reg'd on Aug 1977, the car had twin Su's email me if your interested george.goddard@icloud.com the only number i can see is a casting one 'DD2' Stanpart 1 Link to comment Share on other sites More sharing options...
Roger Posted April 2, 2019 Author Report Share Posted April 2, 2019 Thanks! I will send you an email tomorrow. Link to comment Share on other sites More sharing options...
Nick Jones Posted April 2, 2019 Report Share Posted April 2, 2019 I don’t know the answer to your previous question Roger. I have been previously tld that all the long branch manifolds are angled whether big saloon or federal market TR. I’m doubtful this is true (not necessary on the TRs and harder to machine) but have no proof either way. I do know you need to be careful with US manifolds and heads because some of them (not all) have odd inlet port spacing. I have no idea why..... unless it’s because the US authorities became aware of the pollution potential of Lucas PI and wanted to make it very hard to fit retrospectively! 1 Link to comment Share on other sites More sharing options...
Clive Posted April 2, 2019 Report Share Posted April 2, 2019 Not definitive, but about 20 years ago I bought a long branch inlet manifold and carbs that were from a TR250. Federal strombergs fitted etc. However I was disappointed to find it was angled so it never got fitted. Spacing was correct though. 1 1 Link to comment Share on other sites More sharing options...
Roger Posted April 3, 2019 Author Report Share Posted April 3, 2019 Thanks for the input Clive and Nick. I will not buy a TR250 manifold then, I will try to find one from a Saloon. Link to comment Share on other sites More sharing options...
Guppy916 Posted April 3, 2019 Report Share Posted April 3, 2019 Evening Roger email is on it's way Link to comment Share on other sites More sharing options...
Guppy916 Posted April 4, 2019 Report Share Posted April 4, 2019 Evening Roger more email is on it's way Link to comment Share on other sites More sharing options...
Guppy916 Posted April 10, 2019 Report Share Posted April 10, 2019 Roger has it arrived yet Link to comment Share on other sites More sharing options...
Roger Posted April 10, 2019 Author Report Share Posted April 10, 2019 3 minutes ago, Guppy916 said: Roger has it arrived yet Not yet, its a looong way from the UK to the Åland Island 😀 I will let you know if it has not arrived next week. Br Roger Link to comment Share on other sites More sharing options...
Guppy916 Posted April 30, 2019 Report Share Posted April 30, 2019 Iv'e had good news from Roger his new manifold has arrived at last, I sent it via Hermes on the 4th of this month, thats 26 days to cover 1332 miles, so that's 51 miles a day, the wife's old banana boat would have done it quicker Link to comment Share on other sites More sharing options...
AidanT Posted April 30, 2019 Report Share Posted April 30, 2019 I never use them anymore - held my package ad I'd underpaid. Didn't contact me and was sent from pillar to post when I tried to find out where it was. Took another month to get delivery. I now change the m to a p in their name! It was only a 60 mile journey! Aidan Link to comment Share on other sites More sharing options...
poppyman Posted April 30, 2019 Report Share Posted April 30, 2019 If you want something to get anywhere use royal mail or parcel force...... Yes very expensive, but i have never had a loss or damage. cant say that about most others, and i wont use Her*es unless i can afford to lose it.. meaning if it arrives its a bonus!! Tony. Link to comment Share on other sites More sharing options...
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