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PMVERN
Falcone Joined: 01 Oct 2018 Location: Lincoln Status: Offline Points: 49 |
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Thanks everyone. The crank and everything else are within tolerance. The way the engine pulled apart (with great difficultly), I don't think it's been apart for some time - if ever!
Great news Amboman about the pistons, I think this is the route I'll take. Paul. |
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PMVERN
Falcone Joined: 01 Oct 2018 Location: Lincoln Status: Offline Points: 49 |
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Anyone know which piston choice would suit new Nikersil bores best A, B, or C. I'm guessing A, but I'd like a second opinion before I splash out.
Thanks, Paul. |
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PMVERN
Falcone Joined: 01 Oct 2018 Location: Lincoln Status: Offline Points: 49 |
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Ignore previous post, found B stamped on the barrels
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Chris950s
Senior Member Joined: 03 Nov 2018 Location: Essex Status: Offline Points: 379 |
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The letter stamps on the pistons and bores are to match them in terms of tolerance so A pistons match A bores, etc. as long as they match there is no advantage as to which letter you have.
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Chris and Karen - Essex
2011 Stelvio NTX, 1974 950S (750S replica nearly rebuilt!), 1966 Triumph T100SS 58 years young this year! |
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PMVERN
Falcone Joined: 01 Oct 2018 Location: Lincoln Status: Offline Points: 49 |
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Thanks Chris, just packaging them up now.
Paul. |
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PMVERN
Falcone Joined: 01 Oct 2018 Location: Lincoln Status: Offline Points: 49 |
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3 months later and I've got everything for the rebuild.
I've been trying to find the torque settings for the early 700's. I can find the 750 ones, are they the same? Also, when putting the sludge trap plug back, it just keeps screwing in, I thread-locked it flush and peened it there. I hope this is the correct way. I will include photos in my next post. All responses appreciated, Thanks, Paul. |
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Dave P.
Senior Member Joined: 12 Jan 2015 Location: Northants Status: Offline Points: 5573 |
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I would think that using the 750 torque settings you can't go far wrong.However, there will possibly be some variations and amendments,head nuts for instance.I would wait for Charlie (Amboman) to pick up on this thread and see what he says.
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TO LIVE OUTSIDE THE LAW YOU MUST BE HONEST.
1971 V7 Special. 1972 850GT. 1970 T120 Bonnie. 2009 500 Bullet. |
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Amboman
Senior Member Joined: 05 Dec 2015 Location: Maryland, USA Status: Offline Points: 383 |
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Head nut torque is the same as the 750s and 850s - 29-32 ft. lbs.
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Charlie
'69 Ambassador,'71 Ambassador,'73 Eldorado,'75 Eldorado police,'76 Convert,'77 Morini 3 1/2 Strada,'81 Ducati 500SL Pantah http://www.AntietamClassicCycle.com |
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PMVERN
Falcone Joined: 01 Oct 2018 Location: Lincoln Status: Offline Points: 49 |
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Thanks for that, I'm starting the rebuild tomorrow, I'll get some pictures up.
Paul. |
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Markru12
Falcone Joined: 26 Jun 2019 Location: South Africa Status: Offline Points: 12 |
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I am unfortunately in the same situation regards the cylinders on my 1967 v7
After a fair amount of research i will go the Gilardoni route with 83 mm bore (ambo ) I need to put a few questions out there. The casing bores are 92mm what is the external "spigot" diam of the ambo cylinders?? The original 700 cc heads can be used?? What changes need to be made to gaskets both lower and top?? I understand that there is a barrel height difference between the 700cc and ambo by .5mm does this get removed from the new ambo cylinder or have to be added and if so is this accommodated in the gasket?? The ambo has different valve sizes to the 700cc will this make a big difference if 700 are retained?? Battling to get V7 valve guides any info on this?? Hope someone can assist. Have a great day Mark |
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HPH
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PMVERN
Falcone Joined: 01 Oct 2018 Location: Lincoln Status: Offline Points: 49 |
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Hi Mark,
hope the rebuild goes well. Mines coming on well, a bit slow, because I ordered the wrong size big end shells (gutsibits have been great). I'll get the rest of my photos up when I get back of my holiday (Stella Alpina rally) cheers, Paul. |
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Amboman
Senior Member Joined: 05 Dec 2015 Location: Maryland, USA Status: Offline Points: 383 |
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I'll have to do some measuring of the case and Ambo cylinders. Yes, V700 heads will work fine. The first of the Ambassadors were basically V700s with 3 mm larger bores - same head with small valves and single springs. You will need Ambassador/Eldorado (V7 Special/850GT) base and head gaskets. If anything, the smaller V700 valves seem to make the engine a bit more "torquey" at the expense of top-end power. Use the valve guides from later models, the retaining rings aren't used.
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Charlie
'69 Ambassador,'71 Ambassador,'73 Eldorado,'75 Eldorado police,'76 Convert,'77 Morini 3 1/2 Strada,'81 Ducati 500SL Pantah http://www.AntietamClassicCycle.com |
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Markru12
Falcone Joined: 26 Jun 2019 Location: South Africa Status: Offline Points: 12 |
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Great thanks Charlie.
This is good news i can now order the appropriate parts Appreciate your input Best regards Mark
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HPH
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Markru12
Falcone Joined: 26 Jun 2019 Location: South Africa Status: Offline Points: 12 |
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Busy with gearbox 4 speed 1968
Shimming gone well and seems to be coming together Have not factored in the rear cover gasket thickness(appears that will have no real effect/so thin) What should the end float/backlash be on the lay shaft/output i currently have .4mm The clutch shaft has an end float of .25mm Are these to large and if so i presume i would have to use a shim behind the bearing on rear case??? Regards Mark
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HPH
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PMVERN
Falcone Joined: 01 Oct 2018 Location: Lincoln Status: Offline Points: 49 |
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Back from holidays.
Engine now running, needs fettling and the charging system needs sorting. Working on trying to stop the SS1 from dripping too.( I read a original road test and they leaked from new). Fun and games with the new dynamo belt and clutch cable, both been too short. I'm also going to try and improve the truly awful front brake, but at least the old girl's running again. Photos below as promised, Cheers, Paul. |
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