• 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

TR4/4A ARP Head Stud Question

RJS

Jedi Warrior
Country flag
Offline
Hi

I am installing my new ARP head studs (hand tight). Pretty sure I had them seated all the way. I am in the process of torquing the nut (at 70 lbs-ft now). But, on the right side of the engine, three studs appear to have more threads exposed (front, middle and rear stud). Is this normal? It's not a huge difference but, noticeable to the naked eye - say 2mm.

I checked all the stud lengths carefully when installing and compared them to the old studs that came out. I would have expected all the studs to sit flush and even. I just can't recall how my old studs sat in the block.

Thanks

Bob
PS: and all the studs/nuts on the left side (under the valve cover) look completely even
 
OP
RJS

RJS

Jedi Warrior
Country flag
Offline
OK, may have found my own answer. See this thread - especially comment in very last post ("I have ARP studs, and the short studs on the intake/exhaust side do stick up farther, but only about 1/16" more then the other studs. I have the lifting eye on the rear stud, so hard to tell what's up with that as it's thicker then the ARP washers."):
https://www.britishcarforum.com/bcf...der-head-stud-length-chart&highlight=ARP+stud

I'd be curious what others who've installed ARP have observed.

Bob
 

ghawk16

Jedi Trainee
Country flag
Offline
I didn't notice anything when I put mine on. I used a straight edge and they were all VERY close. I did use an allen wrench to tighten them, then backed them out, and blew the holes out just to make sure there wasn't something in the bottom. When I put them back in they were all relatively the same height and only were hand tight. I wouldn't worry about it too much.
 
Similar threads
Thread starter Title Forum Replies Date
hondo402000 TR6 ARP Head stud kit 71 TR6[ Where to buy] Triumph 10
KVH General Tech ARP Head Studs/Liner Protrusion Triumph 10
DrEntropy MGB And now, NO ARP head studs to be found! MG 13
T TR4/4A Are the ARP head studs worth it? [ducks for cover] Triumph 19
R ARP head and connection rod studs? Spridgets 15
hondo402000 TR6 TR6 ARP head bolts Triumph 4
M ARP head studs Triumph 5
martx-5 ARP Head Studs Triumph 21
Morris ARP Head studs torque... Spridgets 2
ChrisS ARP Head Studs Racing 2
D ARP big end bolts. Spridgets 7
G TR4/4A ARP Bolt Torque Specs Triumph 10
T TR4/4A Should I use ARP Assembly Lubricant for Engine Assembly and Fastener Installation? Triumph 2
T TR2/3/3A ARP connecting rod bolts Triumph 2
RedTR3 TR2/3/3A Moss [ARP] Flywheel Bolts Triumph 16
F Using 12 point ARP style rod and main bolts Spridgets 9
hondo402000 TR6 TR6, 71 model flywheel bolts, ARP Triumph 2
S I just bought ARP main stud kit 206-5405 Austin Healey 4
L ARP fastners. Spridgets 4
Basil ARP studs too short Triumph 18
DNK ARP Studs Triumph 74
Glen_B Torque for ARP mains Spridgets 1
G ARP Assembly Lubricant....how to use the stuff Triumph 9
Morris ARP studs torque and blown headgasket Spridgets 17
7 ARP bolt kits Triumph 2
A ARP flywheel bolts--install Latest [no Loctite] Triumph 11
healeyboz ARP bolts Spridgets 6
healeyboz ARP bolts Spridgets 5
ChrisS ARP Rod Bolts Spridgets 7
sim 948 aluminum head gasket Spridgets 2
K TR2/3/3A Retorquing the Cylinder Head after the initial torquing.? Triumph 12
S TR2/3/3A Rebuilding a cylinder head Triumph 10
petnatcar Cylinder Head Nuts - Tightening Sequence Austin Healey 2
tahoe healey "Convertible" vs "Drop Head Coupe" Austin Healey 8
K TR2/3/3A head gasket repair wire Randall Triumph 1
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
Celtic 77 MGB Mystery cylinder head attachment. MG 4
tinman58 TR2/3/3A Head Gasket Triumph 15
K TR2/3/3A Cylinder head removal and valve adjustment Triumph 2
K TR2/3/3A Update on the blown head gasket Triumph 33
K TR2/3/3A Bad news...blown head gasket??? Triumph 15
F TR2/3/3A head light buckets Triumph 3
D TR2/3/3A cylinder head oil plug bolt size Triumph 6
R Big Healey 100 Head Austin Healey 4
nichola TR6 Hot spot on cylinder head - 1973 TR6 Triumph 2
R For Sale 100 engine block w/head Austin Healey Classifieds 3
B Surprise screw head Restoration & Tools 0
D TR6 Gp 2 cam, head shaved ,shorter pushrods, with a rough idle Triumph 10
K TR2/3/3A Who sells steering wheel control head "Allen head'' grub screws? Triumph 5

Similar threads

Top