Gary Flinn Posted July 10 Report Share Posted July 10 (edited) Hi all I wondered if anyone's got a spare Air Hose Clamp, Part Number 151784 as detailed below, these are listed as no longer available and I need one. Also, does anyone know what the internal diameter is of the two Air Hoses (616012) that feed the Air Filters on a Spitfire 1500 and Vitesse Mk2. Thanks Gary 151784 Air Hose Clamp to Radiator.pdf Edited July 10 by Gary Flinn Link to comment Share on other sites More sharing options...
Puglet1 Posted July 10 Report Share Posted July 10 Gary. Mine looks different- so probably another improvisation to original by the PO? Another photo to follow. Pete. 1 Link to comment Share on other sites More sharing options...
JohnD Posted July 10 Report Share Posted July 10 (edited) Looks like (from the diagram) to be a length of steel strip, bent into shape to support the two hoses. It's a U-section tomake it stiffer, which you could source by taking a length of square tube and cutting off one side. But the U would make it hard to fabricate, unless you had tooling. Would a length of flat strip be acceptable? Not hard to make, form the semicircles around steel tube the size of the hose. Possibly, making two would be easier( longer ends as levers) and weld them together. Why Triumph used two hoses is unknown, when even then it was standard knowledge that flow through a tube depends on the radius. And not just the radius, the FOURTH POWER of the radius! Double the radius and flow increases SIXTEEN times (RxRxRxR. 2^4 = 16) Modding your filter box to take hose twice as big will make a big difference to air flow! Good luck! John PS Triumph DID know! See those two holes underneath the filter box? Air intake for Wide Open Throttle time! J. Edited July 10 by JohnD 1 Link to comment Share on other sites More sharing options...
Peter Truman Posted July 10 Report Share Posted July 10 (edited) I made my bracket out of Aluminum bar 3/4in wide and approx 1/8 thick, I profiled it to two semi circles to replicate the original and fit around the two flexi pipes. Will show photo tomorrow when it's daylight. I had to replace the two flexi pipes as I'd thrown the old ones (all torn) away eons ago pre 74 when I shipped the car here & I couldn't get the right ID here in Aus nothing fitted think all the local flexi pipe was metric! Eventually found flexi pipe that fitted when picking up the wife's Jag from a service, the Jag guy supplied a Mk2 Jag internal heater duct pipe which was just right. The Trumpets on my Air Filter Box are 1.375in Edited July 11 by Peter Truman Photo's attached, and Trumpet Dims included 2 Link to comment Share on other sites More sharing options...
johny Posted July 10 Report Share Posted July 10 The brackets do come up on ebay once in a while. I used fish tank hose for mine but it was slightly small. I believe the motorsport stockists do all sizes including the exact one for our cars... 1 Link to comment Share on other sites More sharing options...
Gary Flinn Posted July 11 Author Report Share Posted July 11 Thanks for all the responses, I will keep an eye out on E-Bay and if the worse comes to the worse I can probably make something or improvise with some other type of bracket. Does anyone know what the internal diameter of the flexible ducting is though? I haven't got the car yet (This Saturday all being well) so I suppose I can measure it then, at the moment no ducting is fitted and I know it helps with engine efficiency to get cold air in to the filters. Cheers Gary Link to comment Share on other sites More sharing options...
Pete Lewis Posted July 11 Report Share Posted July 11 (edited) on the Vit6 we used 32mm waste pipe cut /joined to fit around the rad. on my 2000 + SU used 35mm aquatic tube its strong and smooth inside a couple of large P clips nipped together would make a simple support Pete Edited July 11 by Pete Lewis 1 Link to comment Share on other sites More sharing options...
johny Posted July 11 Report Share Posted July 11 I would measure the intakes as theres no rush and Im sure there will be other goodies to buy😁 1 Link to comment Share on other sites More sharing options...
Pete Lewis Posted July 11 Report Share Posted July 11 agree, too small or too large is always a problem Pete Link to comment Share on other sites More sharing options...
68vitesse Posted July 12 Report Share Posted July 12 Not fitted to MK1 2L Vitesse but used stainless flexible pipe to go with my air box. Regards Paul 3 Link to comment Share on other sites More sharing options...
Gary Flinn Posted July 12 Author Report Share Posted July 12 2 hours ago, 68vitesse said: Not fitted to MK1 2L Vitesse but used stainless flexible pipe to go with my air box. Regards Paul That's a very neat and tidy job😊 Link to comment Share on other sites More sharing options...
trigolf Posted July 12 Report Share Posted July 12 Well, as nobody has posted a pic of the original pipe clip, I thought I would! Internal diameter of pipe is 36mm,according to my cheapo vernier. That measurement tallies with o/d of airbox stubs. BTW. I don't believe Triumph commisioned a manufacturer to make the pipe. Many years ago,I found some redundant pipe left over from one of our airport navigation aids, which just happened to be an exact match for the knackered original pipe! Gav 2 Link to comment Share on other sites More sharing options...
Gary Flinn Posted July 12 Author Report Share Posted July 12 1 hour ago, trigolf said: Well, as nobody has posted a pic of the original pipe clip, I thought I would! Internal diameter of pipe is 36mm,according to my cheapo vernier. That measurement tallies with o/d of airbox stubs. BTW. I don't believe Triumph commisioned a manufacturer to make the pipe. Many years ago,I found some redundant pipe left over from one of our airport navigation aids, which just happened to be an exact match for the knackered original pipe! Gav That's great thanks for posting and measuring. It seems the standard sizes for the Aquatic type hoses suggested by some people is either 32mm or 38mm Inside diameter, so the 32mm is too small and the 38mm slightly to large. Rimmer's and Paddocks list the correct hose so I will probably get it from one of those two suppliers. can I ask what the length is of each pipe, I guess a 1 Metre Length will do both? Gary Link to comment Share on other sites More sharing options...
trigolf Posted July 12 Report Share Posted July 12 My pipes measure 34cm long, a metre should be plenty. 1 Link to comment Share on other sites More sharing options...
Pete Lewis Posted July 12 Report Share Posted July 12 had to fire up an old desktop to get this here is the waste pipe version we constructed many years ago 1 Link to comment Share on other sites More sharing options...
Gary Flinn Posted July 12 Author Report Share Posted July 12 1 hour ago, Pete Lewis said: had to fire up an old desktop to get this here is the waste pipe version we constructed many years ago Pete I like the balancing tube at the front, I wonder if that helps increase the airflow? Gary Link to comment Share on other sites More sharing options...
Pete Lewis Posted July 12 Report Share Posted July 12 sorry no balance pipe its just to add some support Pete 1 Link to comment Share on other sites More sharing options...
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