• The Roadster Factory Recovery Fund - Friends, as you may have heard, The Roadster Factory, a respected British Car Parts business in PA, suffered a total loss in a fire on Christmas Day. Read about it, discuss or ask questions >> HERE. The Triumph Register of America is sponsoring a fund raiser to help TRF get back on their feet. If you can help, vist >> their GoFundMe page.
  • Hey there Guest!
    If you enjoy BCF and find our forum a useful resource, if you appreciate not having ads pop up all over the place and you want to ensure we can stay online - Please consider supporting with an "optional" low-cost annual subscription.
    **Upgrade Now**
    (PS: Subscribers don't see this UGLY banner)
Tips
Tips

TR2/3/3A Retorquing the Cylinder Head after the initial torquing.?

glemon

Yoda
Country flag
Offline
I haven't been here in a while, but ready to jump back in. I always thought you backed off slightly because I was taught (or picked up by osmosis or whatever) that you don't get a good torque reading from a static nut.

That said, after scratching my own head a bit, I think if the goal is to make sure nothing is loose, put a wrench on it and see if it clicks. If the goal is to have as uniform as possible torque specs within standards across all nuts I would loosen and tighten back down.

Will add that in 45 years of British car ownership and lots of heads of and on with Triumphs, MGs, and Austin Healeys I have seen a lot of things break, but never had a head gasket problem. The old cast iron heads are a lot more forgiving than the modern pot metal stuff. You are probably ok doing it either way.

I will add the usual debate I see on this are is if you torque the studs dry and clean or lubed. I think ARP has information on that, but the old factory manuals, is the torque spec. for dry or lubed?
 
OP
K

karls59tr

Obi Wan
Bronze
Country flag
Offline
I haven't been here in a while, but ready to jump back in. I always thought you backed off slightly because I was taught (or picked up by osmosis or whatever) that you don't get a good torque reading from a static nut.

That said, after scratching my own head a bit, I think if the goal is to make sure nothing is loose, put a wrench on it and see if it clicks. If the goal is to have as uniform as possible torque specs within standards across all nuts I would loosen and tighten back down.

Will add that in 45 years of British car ownership and lots of heads of and on with Triumphs, MGs, and Austin Healeys I have seen a lot of things break, but never had a head gasket problem. The old cast iron heads are a lot more forgiving than the modern pot metal stuff. You are probably ok doing it either way.

I will add the usual debate I see on this are is if you torque the studs dry and clean or lubed. I think ARP has information on that, but the old factory manuals, is the torque spec. for dry or lubed?
On the British cars that you did over the years did you always torque dry? I'm assuming they were not ARP which are oiled. I too would be interested to know what the factory manual said as I am replacing the head gasket this Spring and using the stock head nuts and bolts.
 

glemon

Yoda
Country flag
Offline
Yeah, standard OEM I always torqued dry. I think there may be tables or engineering guidelines for equivalent torque between dry and lubed. I don't think most of the factory manuals specified, but been a while since I have looked.
 
Similar threads
Thread starter Title Forum Replies Date
Michael Oritt Torquing/Retorquing cylinder head Racing 7
S TR2/3/3A Rebuilding a cylinder head Triumph 10
petnatcar Cylinder Head Nuts - Tightening Sequence Austin Healey 2
L Removing Master Cylinder Without Paint Damage Austin Healey 27
tr6nitjulius For Sale TR6 Clutch Master Cylinder $40 Triumph Classifieds 0
K TR2/3/3A Checking a cylinder head with a straight edge to see if it's warped? Triumph 22
K TR2/3/3A Cylinder Head Bolt question.... Triumph 3
W Cylinder compression Hillman super minx Other British Cars 15
Celtic 77 MGB Mystery cylinder head attachment. MG 4
K TR2/3/3A Cylinder head removal and valve adjustment Triumph 2
Donald1107 TR2/3/3A low cylinder compression Triumph 12
6 Master Cylinder Rebuild Spridgets 6
K New Clutch Master/Slave Cylinder Austin Healey 1
D TR2/3/3A cylinder head oil plug bolt size Triumph 6
nichola TR6 Hot spot on cylinder head - 1973 TR6 Triumph 2
wkilleffer MGB 1974 MGB clutch master cylinder questions MG 1
Racer-X- Frame mounted power brake pedal/booster/master cylinder kits for RHD cars? Restoration & Tools 1
S TR2/3/3A rear wheel cylinder Triumph 1
AUSMHLY Reduced-Shank Cylinder Head Studs Austin Healey 0
AUSMHLY Cylinder Head Studs Austin Healey 3
AUSMHLY Cylinder Head Input/Exhaust Circlip/Split pin Austin Healey 3
Got_All_4 TR6 Which Clutch Master Cylinder Fork is for TR6 Triumph 4
bighealeysource Master Cylinder Installation Austin Healey 9
bighealeysource BN2 Master Cylinder Austin Healey 91
prb51 100-6 Brake Master Cylinder Bore Austin Healey 5
bighealeysource Brake Master Cylinder Austin Healey 27
KVH General Tech Rusted Cylinder Head Freeze Plug--WOW Triumph 16
AUSMHLY BJ8 Cylinder Head Installation Austin Healey 6
A Brake Master Cylinder Freeplay Austin Healey 11
SNClocks Master Cylinder Bore Diameter Spridgets 0
W replace rigid master cylinder lines with flex. Spridgets 2
T TR2/3/3A cylinder head ,valves and springs Triumph 0
K TR2/3/3A Oil leaks at two front cylinder head studs? Triumph 3
AUSMHLY BJ8 Cylinder Head Re-Torque Austin Healey 26
6 Master Cylinder Actuator rods Spridgets 2
BoyRacer 6 cylinder flywheel on a 100 engine? Austin Healey 0
6 Master Cylinder Install Spridgets 5
Patrick67BJ8 Cylinder Compression Checks Austin Healey 30
S MGB Mgb with nissan cylinder head. I am a new member, introduction and help MG 1
R TR6 Rear brake wheel cylinder fitment Triumph 5
rgfrey Bench Bleeding Brake Master Cylinder Austin Healey 2
K TR2/3/3A Clutch "Long Throw" Slave Cylinder? Triumph 4
K TR2/3/3A Girling red grease that used to come with brake cylinder rebuild kits? Triumph 7
K TR2/3/3A Clutch and Brake Master Cylinder push rod stop bolts? Triumph 15
K TR2/3/3A Clutch Slave Cylinder location when TR3 has a TR6 Gearbox? Triumph 16
WHT Remote Clutch Slave Cylinder Bleed Extension Austin Healey 11
J TR2/3/3A TR3 engine cylinder top clearance Triumph 22
R TR6 Clutch Master Cylinder Hydraulic Line (Thread / Flare Type) Triumph 4
C TR2/3/3A TR3A clutch/brake cylinder rebuild Triumph 4
BobHaskell For Sale Clutch Slave Cylinder Bleeder Extension Austin Healey Classifieds 13

Similar threads

Top