Search found 12 matches

by jp928
Fri Feb 24, 2023 6:44 am
Forum: Engines Area
Topic: How do I stop tappet noise?
Replies: 13
Views: 6570

Re: How do I stop tappet noise?

Late to the party as usual, but...my engine also 74,9.25:1 CR. Some tappet noise. Probably 315k kms. Underside of rocker shafts badly worn, so I replaced with aftermarket shafts and rockers, couple of oil changes. Now nice and quiet. Genuine rockers are crazy $$$, and I am never going to wear these ...
by jp928
Sat Feb 18, 2023 5:40 am
Forum: Engines Area
Topic: 3.5 SU Lumpy Hot Idle
Replies: 6
Views: 1812

Re: 3.5 SU Lumpy Hot Idle

My 9.25:1 CR 3.5L runs fine at 10 BTDC, on 98 Octane . Recently rebuilt HIF6 carbs - new needle & seat and jets, reset per manual. Mix fine tuned with wideband. 10.5:1 CR will be a bit more critical on timing, but really should be run on highest octane fuel you can get, IMHO.
jp 74 P6B S
by jp928
Sat Feb 18, 2023 5:26 am
Forum: Engines Area
Topic: Uprated oil pump spring yes or no !
Replies: 2
Views: 1266

Re: Uprated oil pump spring yes or no !

The RV8 relies on oil volume more than pressure, and as you have the SD1 front cover there should be plenty of volume. Increasing the pressure with a harder spring will also increase the load on the driving gear on the camshaft, which is generally a bad thing. Just keep up regular oil changes. jp74 ...
by jp928
Mon Jan 30, 2023 7:40 am
Forum: Drivetrain & Transmission Area
Topic: Clutch plate dowels
Replies: 4
Views: 1514

Re: Clutch plate dowels

Recently had my flywheel cleaned up - they couldnt get the dowels out, so they got planed off. No vibration issues to 3000rpm so far.
jp 73 P6B S
by jp928
Fri Jan 27, 2023 11:26 pm
Forum: Electrical & Ignition Area
Topic: Car Battery failures
Replies: 13
Views: 3011

Re: Car Battery failures

If a battery flattens in 2 weeks idle there is a significant drain somewhere. Disconnect one pole and put a meter across the pole to the lead set to amps. if you see more than ~30ma, pull fuses one at a time until the reading drops, then you know where some of the drain is - but there may be more th...
by jp928
Sun Jan 22, 2023 3:44 am
Forum: Exhaust, Cylinder Heads, Fuel And Intake Area
Topic: RV8 rocker shaft condition
Replies: 4
Views: 1606

Re: RV8 rocker shaft condition

Even if you turn the shafts over, and drill new oil holes you will still have bits of steel embedded in the old rockers and they will wear the shaft quickly. Unless you plan on doing LOTS of miles a cheap set of after market rockers and shafts should outlive you, be nice and quiet, and do their job ...
by jp928
Thu Jan 19, 2023 9:02 am
Forum: Drivetrain & Transmission Area
Topic: LT77 Gearbox Identification
Replies: 23
Views: 104535

Re: LT77 Gearbox Identification

Have a 25A box - cant find the prefix anywhere? Needs rebuilding.
jp 74 P6B S b
by jp928
Wed Jan 18, 2023 10:54 am
Forum: Engines Area
Topic: Rover 215 camshaft gear issue
Replies: 5
Views: 1861

Re: Rover 215 camshaft gear issue

Hammil recommends the holes in the front face of the block. I have also seen a mod drilling a small (1-1.5mm)in the front cover where the oil pump output enters the block to spray oil directly on the skew gears.

jp 74 P6B S
by jp928
Wed Jan 18, 2023 5:36 am
Forum: Engines Area
Topic: Rover v8 sumps.
Replies: 5
Views: 4436

Re: Rover v8 sumps.

The 2 rear sump bolts go into the rear main cap, are slightly longer than the other bolts, and should have a steel reinforcing strip to better clamp that edge of the sump.
jp 74 P6B S
by jp928
Wed Jan 18, 2023 5:28 am
Forum: Engines Area
Topic: Rover V8 cylinder heads (again?)
Replies: 2
Views: 1264

Re: Rover V8 cylinder heads (again?)

The head casting numbers , and casting date will tell you a lot. I have 2 HRC2479 heads off a Disco 2 - 28cc chambers, made for composite gaskets, dated 3/94. Bigger valves than p6B.Only 10 head bolt holes.
jp 74 P6B S
by jp928
Fri Mar 20, 2020 5:29 am
Forum: Engines Area
Topic: Rover V8 Engine Numbers Updated:
Replies: 175
Views: 226153

Re: Rover V8 Engine Numbers Updated:

thanks! Some progress. will ask for more pics around the oil filter area.
jp
by jp928
Fri Mar 20, 2020 3:54 am
Forum: Engines Area
Topic: Rover V8 Engine Numbers Updated:
Replies: 175
Views: 226153

Re: Rover V8 Engine Numbers Updated:

I have been offered a V8 (via pics only so far), numbered 38DnnnnnC. It is a 3.9, 8.13:1 CR. It has a serpentine front cover, with a dizzy visible. 14CUX loom. I think from a Disco. Looks like 10 bolt heads. Any ideas what the C suffix means please? Is it likely to have a big journal crank - cant se...

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