rear damper bolts

xsport · 21st May 2021, 15:13

does anyone know what the bolt thread size is for the rear damper to hub bolts on the rover 75 kv6 stock hub. they are called dog nose !! or similar name. the size looks like it may be an english size as the nearest size in metric is 14 +mm x 2mm pitch. im looking to buy a tap just in case i have problems with a job coming up and needed to run a tap through . 14 + mm threads i have seen but up to 1.75 pitch only . never 2.0 so im thinking it may be an oddball size that rover have used ?

anyone ?

macafee2 · 21st May 2021, 15:55

just a word of warning, they can be cross threaded when put back in so be careful.
As for needing a tap, I would be surprised, they are quite a thread to ruin

macafee2

xsport · 21st May 2021, 16:21

thanks for the reply. i have just ammended the above thread after remeasuring again. i have not got exact readings as my tools are not handy. the thread is definitely slightly over 14mm dia and the pitch looks 2mm or thereabouts. the only size that comes near is 9/16ths. bsw ? the reason im asking is i recall having a problem before on one hub and it may have like you have already pointed out tried to go in crossed. i sorted it out last time but just in case i needed to rerun a tap im trying to find the exact thread size and type.do you know if rover would have used such an alternative thread or size not being metric ? thanks again for your reply.

Typhoon190 · 21st May 2021, 17:53

Thread in the trailing arm to mount the rear shocker is M14 x 2.0 (standard pitch)

I had an issue with a stripped thread. I bought a helicoil kit, but wasn't able to drill out from under the car directly down the original. Really need a drill jig.

I got a replacement trailing arm and refurbished off the car in the end.

xsport · 21st May 2021, 19:03

Quote:

Originally Posted by Typhoon190

Thread in the trailing arm to mount the rear shocker is M14 x 2.0 (standard pitch)

I had an issue with a stripped thread. I bought a helicoil kit, but wasn't able to drill out from under the car directly down the original. Really need a drill jig.

I got a replacement trailing arm and refurbished off the car in the end.

thanks typhoon190.trikey agrees with you with that size but he will double check for me tomorrow. i dont forsee a problem but thought it a good idea to run a tap through first beforehand. dont fancy your last episode in the middle of a rear end job. i will go gingerly after a tapping and plenty coppaslip i think......

Mike Noc · 25th May 2021, 09:55

Yes I have had the same thing happen - the old bolt picked up on the way out damaging the hole thread. Luckily I had the correct tap to hand which had been bought in error a few months before for another job.

Ran the tap through the hole and it cleaned up perfectly.

trikey · 28th May 2021, 13:01

Standard metric mate.

trikey · 29th May 2021, 12:58

I’m guessing (and it’s only a guess) that the bolts will be the same length, where the bolt passes through the dampener is only a couple of mm thick so shouldn’t require a bolt of a different length.

xsport · 29th May 2021, 13:20

yes andy i think you may well be right.the end of the bolt is a dog face which is stepped down and unthreaded which possibly allows it to enter the end space thats vacant if no bush is required. thankyou andy. ....

21st May 2021, 15:13	#1
xsport Posted a thing or two rover 75 club se Join Date: Apr 2011 Location: Leicester Posts: 1,663 Thanks: 358 Thanked 419 Times in 310 Posts	rear damper bolts does anyone know what the bolt thread size is for the rear damper to hub bolts on the rover 75 kv6 stock hub. they are called dog nose !! or similar name. the size looks like it may be an english size as the nearest size in metric is 14 +mm x 2mm pitch. im looking to buy a tap just in case i have problems with a job coming up and needed to run a tap through . 14 + mm threads i have seen but up to 1.75 pitch only . never 2.0 so im thinking it may be an oddball size that rover have used ? anyone ? Last edited by xsport; 21st May 2021 at 16:11..

28th May 2021, 13:01	#7
trikey Premium Trader Rover 75 Join Date: Nov 2010 Location: Devon Posts: 33,777 Thanks: 8,837 Thanked 14,831 Times in 8,030 Posts	Standard metric mate. __________________ Lest we forget..

29th May 2021, 12:58	#8
trikey Premium Trader Rover 75 Join Date: Nov 2010 Location: Devon Posts: 33,777 Thanks: 8,837 Thanked 14,831 Times in 8,030 Posts	I’m guessing (and it’s only a guess) that the bolts will be the same length, where the bolt passes through the dampener is only a couple of mm thick so shouldn’t require a bolt of a different length. __________________ Lest we forget..

21st May 2021, 15:55	#2
macafee2 This is my second home Rover 75 Saloon & Tourer Join Date: Sep 2012 Location: Lincoln Posts: 14,931 Thanks: 1,630 Thanked 3,032 Times in 2,181 Posts	just a word of warning, they can be cross threaded when put back in so be careful. As for needing a tap, I would be surprised, they are quite a thread to ruin macafee2

21st May 2021, 16:21	#3
xsport Posted a thing or two rover 75 club se Join Date: Apr 2011 Location: Leicester Posts: 1,663 Thanks: 358 Thanked 419 Times in 310 Posts	thanks for the reply. i have just ammended the above thread after remeasuring again. i have not got exact readings as my tools are not handy. the thread is definitely slightly over 14mm dia and the pitch looks 2mm or thereabouts. the only size that comes near is 9/16ths. bsw ? the reason im asking is i recall having a problem before on one hub and it may have like you have already pointed out tried to go in crossed. i sorted it out last time but just in case i needed to rerun a tap im trying to find the exact thread size and type.do you know if rover would have used such an alternative thread or size not being metric ? thanks again for your reply.

21st May 2021, 17:53	#4
Typhoon190 This is my second home MG ZT-T 190 Monogram Typhoon Join Date: Jan 2009 Location: Oxfordshire Posts: 4,707 Thanks: 328 Thanked 557 Times in 443 Posts	Thread in the trailing arm to mount the rear shocker is M14 x 2.0 (standard pitch) I had an issue with a stripped thread. I bought a helicoil kit, but wasn't able to drill out from under the car directly down the original. Really need a drill jig. I got a replacement trailing arm and refurbished off the car in the end.

25th May 2021, 09:55	#6
Mike Noc This is my second home Rover 75 CDT Manual Connoisseur SE, Rover 75 CDT Automatic Connoisseur SE & a Freelander Td4. Join Date: Jul 2009 Location: Hampshire Posts: 11,552 Thanks: 3,470 Thanked 3,119 Times in 2,247 Posts	Yes I have had the same thing happen - the old bolt picked up on the way out damaging the hole thread. Luckily I had the correct tap to hand which had been bought in error a few months before for another job. Ran the tap through the hole and it cleaned up perfectly.

29th May 2021, 13:20	#9
xsport Posted a thing or two rover 75 club se Join Date: Apr 2011 Location: Leicester Posts: 1,663 Thanks: 358 Thanked 419 Times in 310 Posts	yes andy i think you may well be right.the end of the bolt is a dog face which is stepped down and unthreaded which possibly allows it to enter the end space thats vacant if no bush is required. thankyou andy. ....