la bala Posted March 1, 2016 Report Share Posted March 1, 2016 Anyone seen this done, its a method of repairing cracks in engine blocks and the like, its called stitching. Bet you have seen it a few times ditchman. Quote Link to comment Share on other sites More sharing options...
ditchman Posted March 1, 2016 Report Share Posted March 1, 2016 nope never seen that !! Quote Link to comment Share on other sites More sharing options...
Gordon R Posted March 1, 2016 Report Share Posted March 1, 2016 https://www.metalock.co.uk/typical-on-site-repairs/metal-stitching.aspx Quote Link to comment Share on other sites More sharing options...
la bala Posted March 1, 2016 Author Report Share Posted March 1, 2016 nope never seen that !! i have seen a lot of Cat engines given a new lease of life by stitching Quote Link to comment Share on other sites More sharing options...
TONY R Posted March 1, 2016 Report Share Posted March 1, 2016 It restores effective service life to an otherwise scrap block or head, had it done on a fair few Toyota 2LT turbos back in the day, a firm down at whem or wem in shropshire some where used to do it for us from memory. Not sure of their name now its 10 years at least since used them., Quote Link to comment Share on other sites More sharing options...
Brixsmaid Posted March 1, 2016 Report Share Posted March 1, 2016 We used to use Metalock to come repair broken winch casings and the like when I was a young fella in the Merch way back in the early 70's Quote Link to comment Share on other sites More sharing options...
amateur Posted March 1, 2016 Report Share Posted March 1, 2016 I remember my father repairing an Austin 7 cast iron cylinder head using this method in the early 1960's. Quote Link to comment Share on other sites More sharing options...
shaun4860 Posted March 1, 2016 Report Share Posted March 1, 2016 We tried this on an old hydraulic press cylinder years ago but due to the pressures involved and the length of time the cylinder was under extreme pressure it didn't work and a new cylinder was made and installed Quote Link to comment Share on other sites More sharing options...
la bala Posted March 1, 2016 Author Report Share Posted March 1, 2016 We tried this on an old hydraulic press cylinder years ago but due to the pressures involved and the length of time the cylinder was under extreme pressure it didn't work and a new cylinder was made and installed Was the cylinder cast or steel shaun, i have only seen casting done. Quote Link to comment Share on other sites More sharing options...
TIGHTCHOKE Posted March 1, 2016 Report Share Posted March 1, 2016 Cast iron remedie! Quote Link to comment Share on other sites More sharing options...
Gordon R Posted March 1, 2016 Report Share Posted March 1, 2016 His ratchet was made in the USA. Quote Link to comment Share on other sites More sharing options...
TIGHTCHOKE Posted March 1, 2016 Report Share Posted March 1, 2016 Timothy Potter Tool Spotter! Quote Link to comment Share on other sites More sharing options...
shaun4860 Posted March 1, 2016 Report Share Posted March 1, 2016 Was the cylinder cast or steel shaun, i have only seen casting done. It was cast, It was on a 250 ton press used in the making of hydraulic seals (the ram was approx 24" diameter), so would be under pressure for anything up to 5/6 hours, sometimes more, It was replaced by a steel one Quote Link to comment Share on other sites More sharing options...
rodp Posted March 1, 2016 Report Share Posted March 1, 2016 Tried it in the seventies on Cummins sumps, they were cast alloy and shimmed to the engine back plate. They used to crack and obviously leaked oil, the stitching wasn't a success at all, on any of them. Tig welding wasn't really available easily then so easier to buy new sump (and I couldn't gas weld alloy then either, not until years later) Quote Link to comment Share on other sites More sharing options...
la bala Posted March 1, 2016 Author Report Share Posted March 1, 2016 It was cast, It was on a 250 ton press used in the making of hydraulic seals (the ram was approx 24" diameter), so would be under pressure for anything up to 5/6 hours, sometimes more, It was replaced by a steel one Some press bud, wouldnt want your hand in it Quote Link to comment Share on other sites More sharing options...
la bala Posted March 1, 2016 Author Report Share Posted March 1, 2016 Tried it in the seventies on Cummins sumps, they were cast alloy and shimmed to the engine back plate. They used to crack and obviously leaked oil, the stitching wasn't a success at all, on any of them. Tig welding wasn't really available easily then so easier to buy new sump (and I couldn't gas weld alloy then either, not until years later) Obviously has its uses then, have seen used on many Caterpillar engine blocks and never failed. Quote Link to comment Share on other sites More sharing options...
rodp Posted March 1, 2016 Report Share Posted March 1, 2016 Obviously has its uses then, have seen used on many Caterpillar engine blocks and never failed. This was in the seventies, it may well have come on a bit now. We also tried metal spraying of cranks etc, as we were told by the operatives it was the dog's dangly bits. That failed as well, it just separated from the crank. Didn't really matter though, it was British Rail so they just bought new Quote Link to comment Share on other sites More sharing options...
kent Posted March 1, 2016 Report Share Posted March 1, 2016 Yes done properly it works done improperly it don't. Some castings can be welded others can be chemically bonded The labour involved in proper stitching will usually render it a never tried repair in industry Quote Link to comment Share on other sites More sharing options...
la bala Posted March 1, 2016 Author Report Share Posted March 1, 2016 Yes done properly it works done improperly it don't. Some castings can be welded others can be chemically bonded The labour involved in proper stitching will usually render it a never tried repair in industry Metalock certainly get some work from somewhere, they been at it since 1947 Quote Link to comment Share on other sites More sharing options...
bluesj Posted March 1, 2016 Report Share Posted March 1, 2016 Yeah Ive had a few done by metalock when i was in the generator game Quote Link to comment Share on other sites More sharing options...
kent Posted March 1, 2016 Report Share Posted March 1, 2016 Metalock certainly get some work from somewhere, they been at it since 1947 Yes, somethings cost a lot to replace or are unobtainable Quote Link to comment Share on other sites More sharing options...
subsonicnat Posted March 1, 2016 Report Share Posted March 1, 2016 Seen it used on heads,near the valve seats,was never around afterwards to hear of results as it always struck me, the temperature variation of different metals were used..?. Quote Link to comment Share on other sites More sharing options...
shaun4860 Posted March 3, 2016 Report Share Posted March 3, 2016 Some press bud, wouldnt want your hand in it It had a 500 ton big brother Quote Link to comment Share on other sites More sharing options...
la bala Posted March 3, 2016 Author Report Share Posted March 3, 2016 It had a 500 ton big brother What were you pressing nuke shelters Quote Link to comment Share on other sites More sharing options...
shaun4860 Posted March 3, 2016 Report Share Posted March 3, 2016 What were you pressing nuke shelters They were mainly used for making "Packer" seals, Safety shut offs for oil rigs, Once made it was split into 2 halves and placed around something or other on the drilling deck, If they had a serious blow back then it was compressed, sealing off anything escaping, Reason so much pressure was needed was because it was uncured rubber with a thick steel disc on either end, as the rubber heated up it would be compressed by the press, (inside a die) The excess rubber extruded out as it was compressed to the right height and cured over time required, Surprised I remember all that, Steve42 off here used to make the dies and the steel rings. Quote Link to comment Share on other sites More sharing options...
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