2long Posted May 28, 2020 Report Share Posted May 28, 2020 Maybe you should get back in the waves for some inspiration! Good luck! Here’s me at my favorite spot called “Sandys” Cheers Dan Quote Link to post Share on other sites
EliTR6 Posted May 28, 2020 Author Report Share Posted May 28, 2020 9 minutes ago, 2long said: Maybe you should get back in the waves for some inspiration! Good luck! Here’s me at my favorite spot called “Sandys” Cheers Dan Wow Is that Hawaï ? Looks dreamy We had 1-2 ft here yesterday, glassy. Happens once in a blue moon! Usually messy as hell Quote Link to post Share on other sites
2long Posted May 28, 2020 Report Share Posted May 28, 2020 Yes Hawaii it is. Pretty good TR community here, and when I get stuck on a car project I head to the sea! Quote Link to post Share on other sites
EliTR6 Posted May 29, 2020 Author Report Share Posted May 29, 2020 13 hours ago, EliTR6 said: Thanks Bob. You and me both The piston clunks perfectly with a 0.25mm (0.01") spacer slid under one side of the dashpot so I know it can line up Would adding a filed down washer cause any issues? 11 hours ago, 2long said: Yes Hawaii it is. Pretty good TR community here, and when I get stuck on a car project I head to the sea! Very jealous! Crappy waves and I'm on my own here Have you read barbarian days? Quote Link to post Share on other sites
little jim Posted May 29, 2020 Report Share Posted May 29, 2020 Is that a Noah's Ark in the wave to your right????????? Quote Link to post Share on other sites
EliTR6 Posted May 29, 2020 Author Report Share Posted May 29, 2020 (edited) Removed both pistons, cleaned everything up and did the drop test with the piston holes blanked off. About 3sec difference. Swapped dashpots and its down to around one second. Tightening thé dashpot screws in a specific order has got me to a point that seems ok Edited May 29, 2020 by EliTR6 Quote Link to post Share on other sites
Lebro Posted May 29, 2020 Report Share Posted May 29, 2020 Sounds like progress Bob. Quote Link to post Share on other sites
EliTR6 Posted May 29, 2020 Author Report Share Posted May 29, 2020 1 hour ago, Lebro said: Sounds like progress Bob. Cheers I set the jets using my colour tune but then idle was very high even with the throttle stops all the way out. Checked for leaks with carb cleaner and didn't find any. With the carbs synced I couldn't get it to idle under 2000rpm I've leaned the mixture out 2 flats and it's idling at 1200rpm but not very smoothly. Took it for a spin round the block. Revs take forever to drop on lift-off. I'm using 20w50 for the damper oil. Too heavy? Quote Link to post Share on other sites
Lebro Posted May 29, 2020 Report Share Posted May 29, 2020 That's not the problem, did you check that the butterflies were centralised ? is the "suck" the same on both carbs ? Bob. Quote Link to post Share on other sites
BlueTR3A-5EKT Posted May 29, 2020 Report Share Posted May 29, 2020 Clunk is good. Glad you checked the piston in chamber drop speed, I had a pair of carbs that had differing drop rates on the pistons and swapping them solved it. As Bob noted are the butterfly spindles correctly centred now the butterfly discs are seating? Are both the link rods between each carb butterfly/choke sloppy side to side and not binding? You can have a bit of rattle if that allows the chokes and throttles of each carb to move independently and not bind. Cheers Peter W Quote Link to post Share on other sites
EliTR6 Posted May 29, 2020 Author Report Share Posted May 29, 2020 25 minutes ago, BlueTR3A-5EKT said: Clunk is good. Glad you checked the piston in chamber drop speed, I had a pair of carbs that had differing drop rates on the pistons and swapping them solved it. As Bob noted are the butterfly spindles correctly centred now the butterfly discs are seating? Are both the link rods between each carb butterfly/choke sloppy side to side and not binding? You can have a bit of rattle if that allows the chokes and throttles of each carb to move independently and not bind. Cheers Peter W I suspect Bob is right to suspect the spindle. I think I'm going to have to take the carbs off again. I'm fed up and my wife is even more cheesed off with me Apologies for the neck craning angle Just been for another drive, still revving after I take my foot off the throttle Quote Link to post Share on other sites
BlueTR3A-5EKT Posted May 29, 2020 Report Share Posted May 29, 2020 Here is the link rod slop on my car IMG_6149.MOV Quote Link to post Share on other sites
EliTR6 Posted May 30, 2020 Author Report Share Posted May 30, 2020 6 hours ago, BlueTR3A-5EKT said: Here is the link rod slop on my car IMG_6149.MOV Woah. Mine is way too tight ! Thanks Peter Quote Link to post Share on other sites
Lebro Posted May 30, 2020 Report Share Posted May 30, 2020 You should not only have some side to side movement, but also some rotational free play as well before the butterflies actually move. Bob. Quote Link to post Share on other sites
BlueTR3A-5EKT Posted May 30, 2020 Report Share Posted May 30, 2020 Have you seen pages 4 and 5 of this pdf? They give the instruction for rod end float to be 1/32" and rotational of 1/16" Mine are a lot more but still function correctly. http://tr4a.weebly.com/uploads/2/1/9/8/21980360/type_hs_tuning__tervicing.pdf Cheers Peter W Quote Link to post Share on other sites
EliTR6 Posted May 30, 2020 Author Report Share Posted May 30, 2020 7 hours ago, BlueTR3A-5EKT said: Have you seen pages 4 and 5 of this pdf? They give the instruction for rod end float to be 1/32" and rotational of 1/16" Mine are a lot more but still function correctly. http://tr4a.weebly.com/uploads/2/1/9/8/21980360/type_hs_tuning__tervicing.pdf Cheers Peter W Hadn't seen this pdf before, muchos gracias. Just finished a 10 hour work day and I've taken the carbs off. With linkage removed and my spare hand holding the throttle fully closed, here's what I have at the front And the rear carb The piston can't have been falling all their way down as the car was running with the jets pretty much level with the bridge Quote Link to post Share on other sites
stuart Posted May 30, 2020 Report Share Posted May 30, 2020 Its no wonder you have a high tickover with that much air gap round the butterflies, hence also why your jets didnt need to be that far down as theres so much suck going on. Stuart. Quote Link to post Share on other sites
EliTR6 Posted May 30, 2020 Author Report Share Posted May 30, 2020 After adjustment Quote Link to post Share on other sites
stuart Posted May 30, 2020 Report Share Posted May 30, 2020 More like it but you still need that second one to be the same as the first. Stuart. Quote Link to post Share on other sites
Lebro Posted May 30, 2020 Report Share Posted May 30, 2020 1st one looks good, 2nd one not so Bob. Quote Link to post Share on other sites
EliTR6 Posted May 30, 2020 Author Report Share Posted May 30, 2020 56 minutes ago, Lebro said: 1st one looks good, 2nd one not so Bob. 1 hour ago, stuart said: More like it but you still need that second one to be the same as the first. Stuart. Thanks guys Already back together annoyingly. But the good news is that I've got my car back! It's not perfect but it's a damn sight better than its been at any point in the past 3 weeks! Took it for a quick spin and the revs drop normally and power was fine. Idling at 1200rpm but throttle stops are engaged slightly. I spent a lot of time getting the linkage loose enough to start tuning it properly tomorrow. Bob, Peter and Stuart, you are lifesavers! The carbs have been a crappy experience but I've learnt a lot. Hopefully this will help others too. Check your throttle discs before fitting new carbs! (even though you shouldn't have to) Question : both carbs are now registering pretty much zero suck at idle. Does this mean I'm running too rich? Quote Link to post Share on other sites
Lebro Posted May 30, 2020 Report Share Posted May 30, 2020 No, just the way your "suck meter" is set up. Bob. Quote Link to post Share on other sites
EliTR6 Posted May 31, 2020 Author Report Share Posted May 31, 2020 9 hours ago, Lebro said: No, just the way your "suck meter" is set up. Bob. I was doing it wrong "But you don't actually care about the absolute air flow rate, only that you want to make it equal for all carburetors. After getting the tool set up to read dead center on the indicator for the first carburetor, you place the tool in front of the second carb. " https://mgaguru.com/mgtech/carbs/cb135.htm Quote Link to post Share on other sites
Lebro Posted May 31, 2020 Report Share Posted May 31, 2020 No, not at all, but sometimes these meters are fairly insensitive. Keep up the good work Bob. Quote Link to post Share on other sites
EliTR6 Posted May 31, 2020 Author Report Share Posted May 31, 2020 (edited) 41 minutes ago, Lebro said: No, not at all, but sometimes these meters are fairly insensitive. Keep up the good work Bob. Cheers For other kooks like myself, you screw in the unisyn centre to adjust the airflow and bubble height. I've just driven to work to do some fine tuning without any angry neighbours screaming at me. Put 20 litres unleaded 98 in the tank and fuel gauge was a showing empty. My heart sank then I gave the gauge a tap and voilà! Added bonus. The rad hoses I changed are all sealing fine. Under pressure... Engine sounds much improved at idle now Edited May 31, 2020 by EliTR6 Quote Link to post Share on other sites
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