BlueTR3A-5EKT Posted February 3 Report Posted February 3 (edited) GONE Triumph 6 cylinder block and head bare unmachined castings. Does there exist any desire for the ultimate tuners a bare unmachined castings of head and block? PM me if there is. They need a new home. Edited 10 hours ago by BlueTR3A-5EKT Quote
RogerH Posted February 4 Report Posted February 4 The head would make a jolly good narrow boat anchor. The block Ideal for a larger vessel. Roger Quote
Lebro Posted February 4 Report Posted February 4 Polish up the block, & make a coffee table out of it. Bob Quote
BlueTR3A-5EKT Posted February 4 Author Report Posted February 4 So, you both have the same ideas as me. I fear that will be the outcome unless someone with 6 cyl triumph performance engine building gets in touch with me Quote
stuart Posted February 4 Report Posted February 4 1 hour ago, BlueTR3A-5EKT said: So, you both have the same ideas as me. I fear that will be the outcome unless someone with 6 cyl triumph performance engine building gets in touch with me Talk to Darryl. He might like to make an equidistant block out of it.😉 Stuart. Quote
john.r.davies Posted February 4 Report Posted February 4 Lighten my darkness, please? What's an "equidistant" block? I've heard of offsetting the bores, to achieve a maximum over bore, but that doesn't sound right. John Quote
stuart Posted February 4 Report Posted February 4 16 minutes ago, john.r.davies said: Lighten my darkness, please? What's an "equidistant" block? I've heard of offsetting the bores, to achieve a maximum over bore, but that doesn't sound right. John All the bores are equidistant from each other instead of being two and two and two and dont ask me how its done. Stuart. Quote
BlueTR3A-5EKT Posted February 4 Author Report Posted February 4 Thanks. email and photos sent to Darryl at Racetorations. Quote
john.r.davies Posted February 4 Report Posted February 4 2 hours ago, stuart said: All the bores are equidistant from each other instead of being two and two and two and dont ask me how its done. Stuart. That would need a special crank! Could be done with the OE main bearing locations? Is that another way to allow a bigger overbore? John Quote
stuart Posted February 5 Report Posted February 5 18 hours ago, john.r.davies said: That would need a special crank! Could be done with the OE main bearing locations? Is that another way to allow a bigger overbore? John It is a special crank, its done to stop head gasket failure where the bores are closer together at the three points, its a 2.7 also and will take 8500 rpm They didnt do many and Im not sure if theyre still doing them, I have seen one block and I honestly couldnt figure out how its done. Stuart. Quote
Dave McDonald Posted February 5 Report Posted February 5 6 hours ago, stuart said: It is a special crank, its done to stop head gasket failure where the bores are closer together at the three points, its a 2.7 also and will take 8500 rpm They didnt do many and Im not sure if theyre still doing them, I have seen one block and I honestly couldnt figure out how its done. Stuart. The 2.7 litre capacity is available reliably with standard bore spacings with 78mm dia bores, approx + 125 thou, provided you use a special head gasket to suit. I think the equidistant engines were bored even bigger up to something like 2.9 litres, but with questionable reliability. I remember a race at Snetterton some years ago which included a Vitesse (no not you John Davies)around that capacity. It was VERY quick, but only lasted about half the race before it expired, though I can’t say what the problem was. I never saw it again. Dave McD Quote
john.r.davies Posted February 6 Report Posted February 6 (edited) Would such mods have needed specially (ie carefully) made castings? I have a +60 overbore, to 2.6L, but when the shop did that they broke through into the water jacket. Disaster, I cried! No probs, said the shop, it often happens due to core shift in the mould, we'll just sleeve it. They did and it has had no probs. John Edited February 6 by john.r.davies Quote
TRTOM2498PI Posted February 6 Report Posted February 6 20 minutes ago, john.r.davies said: Would such mods have needed specially (ie carefully) made castings? I have a +60 overbore, to 2.6L, but when the shop did that they broke through into the water jacket. Disaster, I cried! No probs, said the shop, it often happens due to core shift in the mould, we'll just sleeve it. They did and it has had no probs. John Hi John, If they sleeved the block, when it was being machined to 0.060", what is your current bore size ? Cheers. Quote
john.r.davies Posted February 6 Report Posted February 6 (edited) +60! I didn't ask for details, but assume they bored it out to take a bigger sleeve, then bored that to +60. Certainly all the bores are the same. John Edited February 6 by john.r.davies Quote
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