Rod1883 Posted January 26 Report Share Posted January 26 I'm in the process of refitting my newly refurbished carbs and have an issue with the alignment/orientation of the linkages that attach to the throttle lever on the front carb throttle shaft. The throttle lever is item 80 in the Moss diagram My issue is that the carbs have come back with this lever set with the ball connecter end much higher than it was such that the link rod (item 84) is along way away as currently set up, and may struggle to reach it even if I extend it to maximum length. This led me to look at the other parts involved in this linkage and I think my set up is incorrect. The parts diagram seems to show that the lever (item 89), that the bottom of the link rod (84) attaches to, sits outboard of the pivot plate (item 86) which is bolted to the Inlet manifold. On my set up this lever sits inboard (i.e. engine block side) of the pivot plate. Additionally the Moss diagram suggests that the longer arm of the lever (89) attaches to the link rod (84) and the shorter arm attached to the rod from the throttle pedal mechanisms - mine is the other way around! Before I start to modify the angle of the throttle lever as the carb refurbisher set it, I thought I ought to check whether my set up of the lever (89) is incorrect and so it would be better to correct that first to see if that resolves the issue. Any advice will be gratefully received as always. Rod Quote Link to post Share on other sites
Rod1883 Posted January 28 Author Report Share Posted January 28 Further to this - I've moved the lever to the outboard side of the manifold plate and swapped the connections so that the throttle pedal linkage connects to the shorter lever arm and the link rod up to the carburettor connection to the longer arm of the lever. This has resolved the issue of the link rod reaching the carburettor but now the bottom end of that short link rod is very close to/fouling the edge of the manifold when the throttle is closed. I'm wondering whether to swap the lengths of the lever arm connections again but before I do - could anyone provide a photo of their set up please? Thanks Quote Link to post Share on other sites
stuart Posted January 28 Report Share Posted January 28 (edited) Not H4 but H6 though same applies and another from TS2 and another from International years ago. Stuart. Edited January 28 by stuart Quote Link to post Share on other sites
Rod1883 Posted January 28 Author Report Share Posted January 28 Thanks Stuart It's difficult to see in those pics, or in the Original TR2/3/3A book the detail of the lever arrangement and connections down on the manifold below the front carb. If anyone could take a picture of their set up in that difficult to see area I would appreciate it. I've managed by some experimentation with link rod length to get the operation better, but I'm still not convinced I've got it exactly right as the lever arm attached to the bottom of the short link rod is very close to catching on the head of the bolt that secures the pivot plate and lever to the manifold with the throttle closed. Quote Link to post Share on other sites
Rocketman Posted January 29 Report Share Posted January 29 linkage on H6 Quote Link to post Share on other sites
stuart Posted January 29 Report Share Posted January 29 Again H6 but better detail and it is the same linkage for H4. obviously Iphone pictures so wrong way up as usual but hopefully they might still help Stuart. Quote Link to post Share on other sites
TR Rob Posted January 29 Report Share Posted January 29 Not sure if these photos help, Quote Link to post Share on other sites
Lebro Posted January 29 Report Share Posted January 29 (edited) 3 hours ago, stuart said: Again H6 but better detail and it is the same linkage for H4. obviously Iphone pictures so wrong correct way up as usual but hopefully they might still help Stuart. Edited January 29 by Lebro Quote Link to post Share on other sites
stuart Posted January 29 Report Share Posted January 29 20 minutes ago, Lebro said: Thanks Bob Stuart. Quote Link to post Share on other sites
BlueTR3A-5EKT Posted January 29 Report Share Posted January 29 (edited) Not only but also…. Edited January 29 by BlueTR3A-5EKT Quote Link to post Share on other sites
Rod1883 Posted January 29 Author Report Share Posted January 29 Thanks everyone - fantastic pictures showing exactly what I needed to see. It is clear now (I think) what I need to do to set things up correctly. Rod Quote Link to post Share on other sites
ianc Posted January 29 Report Share Posted January 29 Rocketman: on my TR4, the front air cleaner sits very close to the inner wing, so please tell me the make/model number of your air cleaners. Thanks, Ian Cornish Quote Link to post Share on other sites
Rocketman Posted January 30 Report Share Posted January 30 12 hours ago, ianc said: Rocketman: on my TR4, the front air cleaner sits very close to the inner wing, so please tell me the make/model number of your air cleaners. Thanks, Ian Cornish My TR has H6 carburettors but this style of filter is available for the H2 & H4 carburettor. Just search ebay for these You need the offset ones (hole in the back lower that centre) Classic Mini - HS6 1-3/4 K&N Style Cone Filter - Stainless Steel Offset Bull Motif Spares Ltd Spares Limited Bull Motif Units 5-6 Isbourne Way Cheltenham, Winchcombe Gloucestershire GL54 5NS United Kingdom Quote Link to post Share on other sites
BlueTR3A-5EKT Posted January 30 Report Share Posted January 30 Link Ian https://www.ebay.co.uk/itm/276288281360 Quote Link to post Share on other sites
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