Search found 247 matches
- Wed Dec 30, 2015 10:59 pm
- Forum: Exhaust, Cylinder Heads, Fuel And Intake Area
- Topic: Air inhection thread sizes
- Replies: 5
- Views: 2959
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...
- Wed Dec 30, 2015 4:51 pm
- Forum: Exhaust, Cylinder Heads, Fuel And Intake Area
- Topic: Air inhection thread sizes
- Replies: 5
- Views: 2959
- Wed Dec 30, 2015 11:27 am
- Forum: Exhaust, Cylinder Heads, Fuel And Intake Area
- Topic: Air inhection thread sizes
- Replies: 5
- Views: 2959
Air inhection thread sizes
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 ...
- Wed Jan 07, 2015 10:09 pm
- Forum: LPG Section
- Topic: BMW 840i LPG conversion
- Replies: 2
- Views: 4847
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 went inside t...
- Mon Jul 14, 2014 11:22 am
- Forum: Drivetrain & Transmission Area
- Topic: 4hp22 vs 4hp24 do I upgrade?
- Replies: 16
- Views: 9861
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 and thicker...
- Sun Mar 16, 2014 12:47 pm
- Forum: Engines Area
- Topic: Machine shop in Glos / Bristol area? And cam advice pls.
- Replies: 7
- Views: 3836
- Sun Mar 16, 2014 12:45 pm
- Forum: Engines Area
- Topic: Machine shop in Glos / Bristol area? And cam advice pls.
- Replies: 7
- Views: 3836
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 Road"...
- Sun Mar 16, 2014 12:31 pm
- Forum: Exhaust, Cylinder Heads, Fuel And Intake Area
- Topic: Thickest head gasket for Rover V8
- Replies: 14
- Views: 8796
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 potential leak s...
- Wed Mar 12, 2014 9:02 pm
- Forum: Exhaust, Cylinder Heads, Fuel And Intake Area
- Topic: Thickest head gasket for Rover V8
- Replies: 14
- Views: 8796
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...
- Thu Feb 20, 2014 7:56 pm
- Forum: Exhaust, Cylinder Heads, Fuel And Intake Area
- Topic: Comp gaskets which way up
- Replies: 10
- Views: 4160
- Tue Dec 10, 2013 11:00 pm
- Forum: Exhaust, Cylinder Heads, Fuel And Intake Area
- Topic: Merlin heads & side-draught swan-necks - testing the wat
- Replies: 1
- Views: 1670
Merlin heads & side-draught swan-necks - testing the wat
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...
- Wed Nov 13, 2013 5:42 pm
- Forum: Engines Area
- Topic: using oil on a new built engine ? how much do you use?
- Replies: 25
- Views: 8772
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...
- Thu Oct 24, 2013 8:56 pm
- Forum: LPG Section
- Topic: LPG Blog
- Replies: 6
- Views: 7016
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...
- Wed Oct 09, 2013 3:06 pm
- Forum: Exhaust, Cylinder Heads, Fuel And Intake Area
- Topic: Thor Efi parts to 3.5 Rover
- Replies: 19
- Views: 10392
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, drilled and ...
- Thu Sep 12, 2013 7:54 pm
- Forum: Engines Area
- Topic: 4.6 Thor V8, is it the same as a GEMS?
- Replies: 2
- Views: 2267
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 other block...