kv6 head bolts

chris75 · 12th April 2019, 11:02

I'm taking the heads off my kv6 to renew valve stem oil seals . Looks like a huge amount of work to get at a tiny part

Does anyone know the size of torx socket I need for the head bolts ? I have a selection , but knowing my luck I won't have the one I need . I have looked on Rave and Haynes but can't find it

Any tips will be welcome

slovcan · 12th April 2019, 14:30

Quote:

Originally Posted by chris75

I'm taking the heads off my kv6 to renew valve stem oil seals . Looks like a huge amount of work to get at a tiny part

Does anyone know the size of torx socket I need for the head bolts ? I have a selection , but knowing my luck I won't have the one I need . I have looked on Rave and Haynes but can't find it

Any tips will be welcome

Is it not possible to change the valve stem seals without removing the heads? I've done it on small block Chevy V8s using air pressure to keep the valves closed while the valve springs were off.

Cheers,
Glenn

breakfastinsmethwick · 12th April 2019, 15:14

I have changed K16 4 cylinder valve stem seals leaving the head on using string (to support the valve) passed through the spark plug holes at bdc then moving the piston to tdc before cracking off the collets. No problems. Not tried a KV6.

chris75 · 12th April 2019, 16:09

Quote:

Originally Posted by slovcan

Is it not possible to change the valve stem seals without removing the heads? I've done it on small block Chevy V8s using air pressure to keep the valves closed while the valve springs were off.

Quote:

Originally Posted by breakfastinsmethwick

I have changed K16 4 cylinder valve stem seals leaving the head on using string (to support the valve) passed through the spark plug holes at bdc then moving the piston to tdc before cracking off the collets. No problems. Not tried a KV6.

I believe the answer is a categoric "no" !

Having had several K16 4 cyl models over the years I wish I still had one for this job ! The Kv6 however is a pig to get at , both banks being steeply inclined with the rear head stuck against the bulkhead . I have already refurbed 2 spare heads in readiness and the thought of trying to remove / refit those tiny collets without excellent access leaves me cold

arblickspule · 12th April 2019, 16:58

E12 from Halfords did ours.

rrobson · 12th April 2019, 19:20

You can do them with a normal 12 pointed socket. I thought they were an et10??

chris75 · 13th April 2019, 14:48

Quote:

Originally Posted by rrobson

You can do them with a normal 12 pointed socket. I thought they were an et10??

Have you done it ? I don't want to risk damaging those bolts when torqueing them up

I do have an E12 as it happens

12th April 2019, 11:02	#1
chris75 same car since 2005 2001 Rover 75 2.0 v6 Connoisseur Saloon Join Date: Nov 2006 Location: Ellesmere Port , Cheshire Posts: 3,811 Thanks: 379 Thanked 549 Times in 466 Posts	kv6 head bolts I'm taking the heads off my kv6 to renew valve stem oil seals . Looks like a huge amount of work to get at a tiny part Does anyone know the size of torx socket I need for the head bolts ? I have a selection , but knowing my luck I won't have the one I need . I have looked on Rave and Haynes but can't find it Any tips will be welcome __________________ Who said it was simples ?

12th April 2019, 15:14	#3
breakfastinsmethwick Gets stuck in Maintainer of sons ZT M47r Join Date: Dec 2013 Location: Shropshire Posts: 624 Thanks: 609 Thanked 124 Times in 100 Posts	I have changed K16 4 cylinder valve stem seals leaving the head on using string (to support the valve) passed through the spark plug holes at bdc then moving the piston to tdc before cracking off the collets. No problems. Not tried a KV6. Last edited by breakfastinsmethwick; 12th April 2019 at 15:17..

12th April 2019, 19:20	#6
rrobson I really should get out more....... 75 tourer cdti, MG ZS 180, nissan terrano & 1.8t rover 25 Join Date: Feb 2010 Location: Pontefract Posts: 2,643 Thanks: 17 Thanked 295 Times in 218 Posts	You can do them with a normal 12 pointed socket. I thought they were an et10?? __________________ How to view a car - everything you need to help you inspect a used car VIS motor tester avalible to local members Injector removal tool and auto gearbox pressure tester now available

12th April 2019, 16:58	#5
arblickspule Newbie Rover 75 Saloon Join Date: Apr 2017 Location: Winchester Posts: 17 Thanks: 0 Thanked 8 Times in 3 Posts	E12 from Halfords did ours.