Wagger Posted March 23, 2022 Report Share Posted March 23, 2022 (edited) On page 46 of the December 2021 Courier there was a feature on Rocket Dog oil that suggested it reduced noise and made gearchange easier. Have any of you tried this, AND, is it yellow metal compatible? I have a late 3 rail gearbox on my 2.5 litre Vitesse that whines in sympathy with input revolutions equally in all gears. It does not grate, grind or modulate. My gearbox cover has no sound proofing either. It is a non-overdrive right now. Would not bother if it had overdrive. This has become notice-able since reducing other noises (mainly exhaust). The diff is not audible (yet). Would be interested in hearing from anyone who has tried it. Soundproofing may prove cheaper. Either requires the tunnel out yet again! Edited March 23, 2022 by Wagger Correction Link to comment Share on other sites More sharing options...
Colin Lindsay Posted March 23, 2022 Report Share Posted March 23, 2022 No experience of it but James Paddock have a heavier oil and I know that one's guaranteed to be ok (just used it for the first time too)- it's by Penrite and comes out of the bottle like treacle. https://www.jamespaddock.co.uk/penrite-differential-oil-1-litre-2 Link to comment Share on other sites More sharing options...
Pete Lewis Posted March 23, 2022 Report Share Posted March 23, 2022 a 140 ep is ok to use in a diff but never ever in the gearbox the baulk rings wont handle the added viscosity you wont synchronize and probably just baulk any gear change and rocket dog sound more ljke snake oil surely best avoided constant input noise is input shaft bearing or cluster needle rollers and spindle if it was quieter in 4th then mainshaft tip failure Pete Link to comment Share on other sites More sharing options...
Wagger Posted March 23, 2022 Author Report Share Posted March 23, 2022 45 minutes ago, Pete Lewis said: a 140 ep is ok to use in a diff but never ever in the gearbox the baulk rings wont handle the added viscosity you wont synchronize and probably just baulk any gear change and rocket dog sound more ljke snake oil surely best avoided constant input noise is input shaft bearing or cluster needle rollers and spindle if it was quieter in 4th then mainshaft tip failure Pete It is the same in 4th Pete, However, it only whines when driving, not when coasting. Link to comment Share on other sites More sharing options...
Pete Lewis Posted March 24, 2022 Report Share Posted March 24, 2022 sounds more like input bearing easy to change , drop the layshaft spindle(make a short dummy shaft) and knock the input shaft out give it a spin then replace it if its a bit rough these often fail if the box has been stored upright on the clutch housing and sediment then runs into the front bearing and is the first to suffer if oil levels are quite low Pete just a thought does the gearstick move going drive/overun im thinking the circlip has popped off the back of the mainshaft bearing Link to comment Share on other sites More sharing options...
Wagger Posted March 24, 2022 Author Report Share Posted March 24, 2022 1 hour ago, Pete Lewis said: sounds more like input bearing easy to change , drop the layshaft spindle(make a short dummy shaft) and knock the input shaft out give it a spin then replace it if its a bit rough these often fail if the box has been stored upright on the clutch housing and sediment then runs into the front bearing and is the first to suffer if oil levels are quite low Pete just a thought does the gearstick move going drive/overun im thinking the circlip has popped off the back of the mainshaft bearing Will check that, but I do not remember it moving. Link to comment Share on other sites More sharing options...
Pete Lewis Posted March 24, 2022 Report Share Posted March 24, 2022 its not uncommon for the clip to pop off this allows the whole gear set to be misaligned to the corresponding gears on the layshaft cluster with a mesh whine to go with it all the time the drive overrun change in noise makes this a possible again a cheap fix you can pop the tail extension off whilst still in the car ( this will dump all the oil ) do the simpulze !! first just some waffling and especially as you are poking the torque of the 2.5 through a 3 rail add to the thrust of the gears helices Pete Link to comment Share on other sites More sharing options...
Wagger Posted March 24, 2022 Author Report Share Posted March 24, 2022 5 minutes ago, Pete Lewis said: its not uncommon for the clip to pop off this allows the whole gear set to be misaligned to the corresponding gears on the layshaft cluster with a mesh whine to go with it all the time the drive overrun change in noise makes this a possible again a cheap fix you can pop the tail extension off whilst still in the car ( this will dump all the oil ) do the simpulze !! first just some waffling and especially as you are poking the torque of the 2.5 through a 3 rail add to the thrust of the gears helices Pete Until obtaining the car we had no idea of the mods. It was a bargain at under £2k. History from 1998 unknown. That was a risk worth taking in hindsight. Finding the bits to replace the overdrive and doing what you describe will be a worthy way forward. I'll use it for this Summer on short trips. It will soon tell me if it gets worse. I have funds for the bts now, just need he time and fortitude. Link to comment Share on other sites More sharing options...
Pete Lewis Posted March 24, 2022 Report Share Posted March 24, 2022 sorry forgot you have a overdrive checking the rear clip on that is bit of a faf to get the OD off "in Car" so its looking like drive for the season and pencil in a box off later in the year when there is time to check the whole thing and a 3 rail plus OD is pretty heavy Pete Link to comment Share on other sites More sharing options...
Wagger Posted March 24, 2022 Author Report Share Posted March 24, 2022 34 minutes ago, Pete Lewis said: sorry forgot you have a overdrive checking the rear clip on that is bit of a faf to get the OD off "in Car" so its looking like drive for the season and pencil in a box off later in the year when there is time to check the whole thing and a 3 rail plus OD is pretty heavy Pete Sorry Pete. I mislead you. It's non overdrive at present. Overdrive is in the spares box and badge still on car, as it did have one originally. Best answer is to find all of the bits, o/p shaft, adapter plate and prop, then do the whole thing. Meanwhile, use the car whilst the World situation allows eh!. Link to comment Share on other sites More sharing options...
Colin Lindsay Posted March 24, 2022 Report Share Posted March 24, 2022 14 hours ago, Pete Lewis said: a 140 ep is ok to use in a diff but never ever in the gearbox the baulk rings wont handle the added viscosity you wont synchronize and probably just baulk any gear change Apologies, spotted the 'oil' bit and blanked the gearbox part. Link to comment Share on other sites More sharing options...
Pete Lewis Posted March 24, 2022 Report Share Posted March 24, 2022 anything before luch is misleading Ha ! 1 hour ago, Wagger said: I mislead you. 43 minutes ago, Colin Lindsay said: Apologies get on with that exhaust Pete Link to comment Share on other sites More sharing options...
daverclasper Posted March 25, 2022 Report Share Posted March 25, 2022 It does sound too good to be true and wary myself (though those S Wales club members do seem to be knowledgeable, and are trustworthy about Rocket Dog, who maybe do a lot of work for them). Who knows? Link to comment Share on other sites More sharing options...
Pete Lewis Posted March 26, 2022 Report Share Posted March 26, 2022 Dave just try it let us know if it still leaks pete Link to comment Share on other sites More sharing options...
Badwolf Posted March 27, 2022 Report Share Posted March 27, 2022 If it's a Triumph, then it will leak, no matter what you put in it!! Isn't that part of the design spec. I think mine would leak solid concrete. Link to comment Share on other sites More sharing options...
PeteH Posted March 28, 2022 Report Share Posted March 28, 2022 On 24/03/2022 at 07:14, Pete Lewis said: these often fail if the box has been stored upright on the clutch housing and sediment then runs into the front bearing and is the first to suffer if oil levels are quite low Thanks for that, I will have to ensure I check out the Box for the 13/60, before reinstall, as its been stored in said manner for over 5 years now?👍 Removal and wash out the bearing?. or just go ahead and replace anyway?. The ones with the Circlip Groove are not cheap? Canley want 22 quid. Pete Link to comment Share on other sites More sharing options...
Pete Lewis Posted March 28, 2022 Report Share Posted March 28, 2022 a quick turn by hand will feel if its a tad lumpy if its all smooth and easy take it to be OK washing is not an easy job and often makes things worse pete 1 Link to comment Share on other sites More sharing options...
Colin Lindsay Posted March 30, 2022 Report Share Posted March 30, 2022 On 23/03/2022 at 21:45, Pete Lewis said: a 140 ep is ok to use in a diff but never ever in the gearbox the baulk rings wont handle the added viscosity you wont synchronize and probably just baulk any gear change Ok so why did I pick up the same oil can that I've used on the diff and just filled the gearbox with EP 140? Managed to drain most of it out again, hopefully a fill of EP90 will dilute it down sufficiently. It's been a long day. Link to comment Share on other sites More sharing options...
Josef Posted March 30, 2022 Report Share Posted March 30, 2022 On 24/03/2022 at 09:30, Pete Lewis said: pop the tail extension off whilst still in the car Well, I’m glad I just read this! I got my rebuilt 4 synchro box all fitted to the Herald and ready to test this afternoon. Went for a quick run up and down the lane, all good but the speedo stopped working. Popped the speedo cable on a drill and the cable and instrument were fine. Took the speedo drive out the box, that was fine. Stuck my finger in to feel the worm gear and it was in bits. Had just resigned myself to pulling the whole box out again… Link to comment Share on other sites More sharing options...
Pete Lewis Posted March 31, 2022 Report Share Posted March 31, 2022 13 hours ago, Colin Lindsay said: why did I thats quite normal age related activity ...sorry Pete Link to comment Share on other sites More sharing options...
Pete Lewis Posted March 31, 2022 Report Share Posted March 31, 2022 12 hours ago, Josef said: glad I just read this! the snag is will it clear the prop tunnel enough to remove it fully so drop the mounts and maybe jack it up a bit I have refitted the overdrive whilst box is in car but its a right faf and needs extra hands if you use the two lever trick on the piston plates to release the hub/splines to all self align Pete Link to comment Share on other sites More sharing options...
Josef Posted March 31, 2022 Report Share Posted March 31, 2022 7 hours ago, Pete Lewis said: the snag is will it clear the prop tunnel enough to remove it fully so drop the mounts and maybe jack it up a bit I have refitted the overdrive whilst box is in car but its a right faf and needs extra hands if you use the two lever trick on the piston plates to release the hub/splines to all self align Pete Fortunately this one is non overdrive, so fingers crossed. Worth a shot before pulling the whole thing out again! Something violent has happened to this speedo drive in the past. The white-ish plastic housing on the donor box was snapped in two and the centre of it had melted to the speedo pinion (don’t worry I hadn’t tried reusing that!) Link to comment Share on other sites More sharing options...
Pete Lewis Posted March 31, 2022 Report Share Posted March 31, 2022 the only thing to damage the worm is the wrong size pinion being too hard in mesh a cable fail doesnt normally wreck the worm Link to comment Share on other sites More sharing options...
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