The V8 Owners Forum -

Cheers ged, that's the smaller size blanks, used on the pulsair systems that have 4 pipes per side. The ones I'm needing are an oddball - the system used on late model V8 defenders that only had 3 pipes connected per side. Apparently, they sussed out that due to the firing order and pulses, this was...

Yeah, that's the smaller, more "normal" boss size. This is the larger size thread, appears to be around 16mm, possibly a metric fine?

Folks, got an urgent issue.... I have a friend who has a pair of heads with the threaded ports for the pulsair air injection pipes just above the exhaust ports, but the thread size seems a larger diameter than other heads I have previously seen with this arrangement. I don't have the heads in front ...

Yes, I did one some years back for a customer using an OMVL Dream 21-N ECU, "matrix" injectors and a torroidal tank in the boot. From memory, the only thing visible when you opened the bonnet was the vapouriser which had to go down near the remote oil filter - only space available! ECU wen...

Just seen this thread! You can rebuild the internals from the main case of a 4HP24 into a 4HP22 case and then use the normal hydromechanical valve block unit from the 4HP22, no need for Ashcroft's ridiculously priced controller! You can also use the 4HP24's larger "A" clutch, larger pump a...

Sorry, meant to add, I wouldn't use Rhodes lifters with that cam, I don't think it's a wild enough profile to merit them...

Thankfully, Lund has vanished off the face of the earth as he owes so many people so much money!!! That name is a bit of a swear-word around certain internet forums.... Anyway, cams. The LE2 cam is basically a Crane H218 with the inlet advanced a degree - it is only at the top-end of the "Mild ...

1mm (0.040") should be fine for clearance, as a minimum, although I have built hot RV8 engines in the past with only 0.75mm (and 2-stroke KH engines with 0.2mm!!). Personally, I would machine the pistons by 0.25mm / 0.010" in preference to using two gaskets any day, as it is another potent...

Thickest gaskets I know of personally are about 0.9mm compressed (composites). The problem if you stack tin gaskets is that they must be stacked with their corrugations the opposite way - they will seal around the chambers ok but you will often get bad oil leaks at the feed holes up to the heads. (t...

I agree with Devonman. Wider side of the fire ring to the block, every time.

Hi folks, Some years back I paid rather a lot of money for a pair of new, unused Merlin heads complete with rocker covers, head stud kit etc. I'm pretty sure I bought them from a forum member but my memory isn't quite what it used to be! I had great plans for a nice 4.2 to fit into my (still) ongoin...

The only official maximum oil consumption figure I have ever seen published was in an old Rover workshop manual update for something or other and that quoted 450 miles per pint!!! More modern variants of the engine ought to use less in all honesty, what with the improved valve stem seals etc, but yo...

Sorry, but having seen the pics I have to say that is an extremely amateurish conversion and it would never have left my workshop like that! As for filling adaptors - if used correctly they are not an issue. I have run plenty of vehicles with them over the years without issue, some people need to ge...

Hotwire fuel rail fits if you crop one of the rear brackets where the coil pack would mount. Single-pipe fuel system is ecu-controlled, pressure regulated by pump. Vacuum servo offtakes is on the front "cross-plenum", opposite end to throttle body. Front of manifold can be machined out, dr...

Block is slightly different where the crank sensor fits in. You have to use the correct mounting "plug" for the correct system, it is on a pin for location then tack-welded in place for security. Pops out easy enough but must have the two tig-weld tacks to secure it. One system needs the o...