• 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

Procedure for cylinder head removal and re-installation - BJ8

Share this page

S

SteveHall64Healey

Jedi Trainee
Offline
Gents, I've read a few posts on this forum re this topic, but haven't found anything that brings it all together. Does anyone know of a complete procedure for the removal and re-installation of a BJ8 cylinder head?
thanks,
steve
 
Randy Forbes

Randy Forbes

Yoda
Country flag
Offline
Have you checked the Bentley service manual? While it's been decades since I used one for the actual procedure, I seem to recall them being written for step by step service routines.
 
Healey Nut

Healey Nut

Luke Skywalker
Country flag
Offline
SteveHall64Healey said:
Gents, I've read a few posts on this forum re this topic, but haven't found anything that brings it all together. Does anyone know of a complete procedure for the removal and re-installation of a BJ8 cylinder head?
thanks,
steve
Click to expand...

Drain the coolant take off the rocker cover, rocker shaft, push rods carbs, manifolds , etc etc . unbolt the head and practice your weight lifting abilities while leaning over the wings . Its not complicated .
 
HealeyRick

HealeyRick

Yoda
Silver
Country flag
Offline
Healey Nut said:
Drain the coolant take off the rocker cover, rocker shaft, push rods carbs, manifolds , etc etc . unbolt the head and practice your weight lifting abilities while leaning over the wings . Its not complicated .
Click to expand...

Only thing to remember is unbolt the head in the sequence in the workshop manual (and eat your spinach). Frankly, I find it easier to use a couple of engine lifting brackets like these https://www.ebay.com/itm/MGA-MGB-MG-MIDGET-SPRITE-AH3000-ENGINE-LIFTING-BRACKETS-/380328653698 and attach them to a couple of cylinder head bolts with a length of chain between the brackets and use an engine hoist to lift the cylinder head. Saves your back and helps unstuck stubborn heads. Just make sure the pulling angle is straight up or the head will bind on the studs. Before you take the hood off, drill a couple of 1/16" holes in each of the hinges as an index mark. When it's time to reattach the hood, insert the drill in the holes to properly line up the hood. Saves hours of fun.
 
B

bob hughes

Luke Skywalker
Country flag
Offline
I'm with Healey Rick,
It is easier if you take the hood off (bonnet). I tend to use a hoist to get the head off, saves straining whilst reaching over.

:cheers:

Bob
 
OP
S

SteveHall64Healey

Jedi Trainee
Offline
HealeyRick said:
Go here, there's a 100-6 manual in PDF half way down the page: https://healey6.com/bulletin.htm
Click to expand...

Thanks for the link - I did have a look and it's very similar to the AH3000 manual I have. I have removed and re-installed heads before. I am looking for the bolt removal sequence - as opposed to the general knowledge guideline that you remove in the opposite order specified in the installation bolt tightening sequence ...
thanks Steve
 
HealeyRick

HealeyRick

Yoda
Silver
Country flag
Offline
SteveHall64Healey said:
Thanks for the link - I did have a look and it's very similar to the AH3000 manual I have. I have removed and re-installed heads before. I am looking for the bolt removal sequence - as opposed to the general knowledge guideline that you remove in the opposite order specified in the installation bolt tightening sequence ...
thanks Steve
Click to expand...

Look at Fig A.12 in section A.18. It shows the tightening sequence. To loosen the head, start with Number 16 and loosen each nut in reverse order back to 1, a few turns at a time.
 
busybrit

busybrit

Jedi Hopeful
Country flag
Offline
I've just competed this job on a 3000 and you don't take the bonnet off, or use the engine hoist. Get two metal bars, I used 1" sq tubing a little narrower than the width of the bonnet. Drill two holes in each to match up with the studs that hold on the valve gear. With the valve gear removed, bolt on the two bars and with a helper on the other side of the car, lift off the head. You can put it back the same way. I have used this method on several cars with heavy cylinder heads.

On a side note, make sure all the nuts and threads are clean and that they don't bind up, and make sure you have the correct heavy,,, thicker washers under the nuts. You should remove the studs from the block to aid cleaning the surface, screw them back in and just tighten them a little, no need to go crazy, or you can crack the block, the ones on the front and rear are the easiest to crack.

Good luck
 
OP
S

SteveHall64Healey

Jedi Trainee
Offline
busybrit said:
I've just competed this job on a 3000 and you don't take the bonnet off, or use the engine hoist. Get two metal bars, I used 1" sq tubing a little narrower than the width of the bonnet. Drill two holes in each to match up with the studs that hold on the valve gear. With the valve gear removed, bolt on the two bars and with a helper on the other side of the car, lift off the head. You can put it back the same way. I have used this method on several cars with heavy cylinder heads.

On a side note, make sure all the nuts and threads are clean and that they don't bind up, and make sure you have the correct heavy,,, thicker washers under the nuts. You should remove the studs from the block to aid cleaning the surface, screw them back in and just tighten them a little, no need to go crazy, or you can crack the block, the ones on the front and rear are the easiest to crack.

Good luck
Click to expand...

Thanks - sounds like good advice.
Steve
 
tahoe healey

tahoe healey

Yoda
Country flag
Offline
Geez, my wife and I just lifted it off. Bonnet in place. Took it to the machine shop and they sent a 20ish kid to get it from the rear of my SUV and he carried it in with one arm. This is not something I'd look forward to doing every day. The best advice I can give is to have a cart very close by (we used her gardening wagon with a couple of short 2x4's to rest it on so we didn't crush my fingers and ruin her nail polish).
TH
 
Similar threads
Thread starter Title Forum Replies Date
Y BJ8 Clutch Master Cylinder Bleeding Procedure? Austin Healey 7
scottkilpatrick TR4/4A Knock off wire wheels procedure..basic questions Triumph 9
AUSMHLY R & R BJ8 Transmission Bearings Procedure Austin Healey 1
S Fuel gauge calibration procedure Austin Healey 18
S Testing and Adjusting procedure for RB340 Austin Healey 4
J TR2/3/3A Inner sill replacement procedure ? Triumph 5
S TR4/4A procedure for installing gauges etc Triumph 0
steveg Break In procedure Austin Healey 5
T TR4/4A Your procedure for checking out a new-used engine Triumph 6
S Procedure for setting and tuning HD8s? Austin Healey 10
af3683 TR2/3/3A Correct Procedure to Raise TR3 Soft Top Triumph 7
R degreeing cam spec question and procedure Spridgets 23
Gliderman8 Is there a start-up procedure? ..... Triumph 10
M TR4/4A tr4A timing chain procedure? Triumph 9
R compression test procedure on 1500 midget Spridgets 5
R Procedure to store engine Triumph 6
T Procedure to change points? Triumph 31
T Coil Test procedure ? Triumph 10
F GT6 GT6/TR6 Engine Painting Procedure... Triumph 3
J Engine Break In Procedure? Spridgets 12
T Engine bay painting procedure? Triumph 6
T Engine bay painting procedure? Triumph 0
D Torquing Procedure Racing 16
nevets oil filter change procedure Austin Healey 22
R_Lyle Replacing clutch / flywheel procedure Triumph 12
G Is there a procedure to remove the smog equipment? Spridgets 1
S Rebuilt Engine Breakin Procedure Austin Healey 4
nevets procedure for replacing brake fluid Austin Healey 14
Webb Sledge Engine Break In Procedure Triumph 9
Alfasudcrazy Starting procedure for 1975 Daimler 4.2 Jaguar 4
W What is the proper procedure for priming S.U.175's Triumph 4
S Proper Starting Procedure After Winter Storage Triumph 12
K TR2/3/3A Getting a cylinder head skimmed for flatness.... Triumph 1
K TR2/3/3A Retorquing the Cylinder Head after the initial torquing.? Triumph 23
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

Similar threads

Top