Which engine parts are required for a complete VHPD rebuild?
Thanks,
George
not comprehensive, but this is based on what I used recently
big end bearings
main crank bearings
liners (don’t ask!)
oil rail (thought I might as well for 30 quid)
head gasket
head bolts
all other gaskets (crank seal, camshaft seals)
piston rings
(pistons possibly!)
big end bolts (apparently not necessary)
Then for the head
new/reground follower shims
valve guides (and re-seat valves)
plus cambelt, new tensioner
and a couple of sealants, and some bits and bobs that you come across as you do the job. I’d like to say it was easy, I thought it was…but until it runs I’m going to keep my gob shut!
Nice Joff. Thanks.
By the way, have you done it yourself? Do you have all the required tools for the job?
George,
Judging by the state of my engine when it came apart I’d budget for new pistons if I was you. Mine had terrible wear on the skirts.
aye,I did it myself, and I agree that i’s best to assume you will need new pistons from the start.
not much in the way of spacialist tools required, E12 socket for the head bolts, and a 12 point 10mm socket for the big end bolts (not exactly speciaist, but all my 10mm sockets were 6 sided).
used a bench grinder to re-shim, and a dial guage for measuring the shims and setting the cam timing, and the engine went to a local engineer for 5 thou removing from the block to give a 5 thou liner protrusion. Other than that I did it myself. with advice!
…hang on…more like til it goes.
If you’re going to the expense of pulling it all to bits I would definitely budget for pistons and rods. You’ll be lucky to get much more than 30k from a set of VHPD pistons.
HTH
Plenty of VHPD’s still running strong on original pistons and hg at 50k miles -
Plenty of VHPD’s still running strong on original pistons and hg at 50k miles -
Mine was at around 43kmiles when it went. I don’t think it would be a problem at 50+kmiles, however when you look at the wear on the piston skirts etc you would be mad to re-use them.
Plenty of VHPD’s still running strong on original pistons and hg at 50k miles -
Mine was at around 43kmiles when it went. I don’t think it would be a problem at 50+kmiles, however when you look at the wear on the piston skirts etc you would be mad to re-use them.
Which was what I meant. Just typed it in a hurry. The amount of wear on VHPD pistons at 30k is excessive to say the least.
Simon is indeed correct but I did not state that it was a piston problem. I, perhaps incorrectly, assumed we were talking about rebuilding a VHPD from its original state.
I have added an edited version of my original below post for the pedants. Hope that’s a bit clearer.
If you’re going to the expense of pulling it all to bits I would definitely budget for pistons and rods. You’ll be lucky to get much more than 30k from a set of original VHPD pistons and have them still in a useable condition.
HTH
Yup and and as a pedant of some repute I’ve purchased a set of Omega’s for this winter’s VHPD rebuild - just need to source some decent liners now
DVA is commissioning a few sets now, you may want to get in on it, I think I may. My engine is out and I’m about to tear her down.
I always had this query about the omega pistons; �why do they last less than the standard ones, in an engine that produce less power than the standard can reach without any problems?�
What I mean is, for example a VVC engine with a few external modifications can reach 170-180BHP. I know that this engine can easily do 100k miles with no problem. My VHPD has done 45k miles at 177BHP. Just by examining the numbers and in theory, a VHPD engine with forged pistons should at least last more than the VVC.
But KingK answered it, before even asking! Thanks Simon.
If I have to add liners and pistons, plus all the other parts, then rebuilding the VHPD is not really worth it, as it sounds expensive and time consuming. I will run it as it is at the moment until it blows! At least, I am hopping to find a good map for the emerald and some help with the cam pulleys settings so it can go to 190BHP.
not comprehensive, but this is based on what I used recently
big end bearings
main crank bearings
liners (don’t ask!)
oil rail (thought I might as well for 30 quid)
head gasket
head bolts
all other gaskets (crank seal, camshaft seals)
piston rings
(pistons possibly!)
big end bolts (apparently not necessary)Then for the head
new/reground follower shims
valve guides (and re-seat valves)plus cambelt, new tensioner
and a couple of sealants, and some bits and bobs that you come across as you do the job. I’d like to say it was easy, I thought it was…but until it runs I’m going to keep my gob shut!
Excluding the pistons and liners, where are you sourcing your parts, head bolts, gaskets etc…OE or ???
I have just stripped my VHPD (see thread on Seloc). Can only echo all above comments… my valves were very loose in the guides, and the liners were shot. Mine had done 40k miles and felt really good before stripping…
So the main parts I have had to replace include valve guides, pistons, rods, liners. bearings were also very much shot.
Mines done 50k now and feels great - kiss of death or what