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by DaveEFI
Fri Apr 03, 2020 8:51 am
Forum: Please Tell Us About Yourself
Topic: Hello
Replies: 4
Views: 53

Re: Hello

Ah - not got that modern with the RV8. :D Are the factory tubular SS? Some of the cast iron types are certainly pretty crude.
by DaveEFI
Thu Apr 02, 2020 8:56 am
Forum: Please Tell Us About Yourself
Topic: Hello
Replies: 4
Views: 53

Re: Hello

IIRC, all standard manifolds are cast iron, which should last forever, unless smashed etc. The standard SDI manifold (or at least on the EFI ones) is said to be very good, apart from the weight. But it has twin exits at about 45 degrees and to the back (covering the starter) so not suitable for ever...
by DaveEFI
Wed Apr 01, 2020 8:31 am
Forum: Engines Area
Topic: Rebuild of a RV8 4.6 instead of the 3.9
Replies: 6
Views: 74

Re: Rebuild of a RV8 4.6 instead of the 3.9

Since I am working with a 285 degree cam, it won’t work with a programmed wasted spark system. I already considered that. But since you might get gas mixture into the bore even when the piston is down, you would for sure have endless nos. of failure ignitions. Is there really nobody here who ever m...
by DaveEFI
Tue Mar 31, 2020 2:59 pm
Forum: Engines Area
Topic: Rebuild of a RV8 4.6 instead of the 3.9
Replies: 6
Views: 74

Re: Rebuild of a RV8 4.6 instead of the 3.9

You could also keep the front of the engine as standard (assuming the water pump is the correct height) and go to programmed wasted spark with no dizzy. Which is a big improvement in both performance and even more, reliability.
by DaveEFI
Fri Mar 27, 2020 9:33 am
Forum: Engines Area
Topic: 3.9 efi oil leak
Replies: 4
Views: 86

Re: 3.9 efi oil leak

The EFI engine is more prone to leaks if the breather is partially blocked. On an unknown engine, it's worth renewing the flame trap - the grey thing that screws into the right rocker, check the hose is clean, and the passage into the throttle body the other end of that hose goes to. The steel pipe ...
by DaveEFI
Thu Mar 26, 2020 4:19 pm
Forum: Engines Area
Topic: 3.9 efi oil leak
Replies: 4
Views: 86

Re: 3.9 efi oil leak

At the top of the engine? Rocker covers and inlet manifold at the ends. Can be difficult to see the source due to the oil creeping.
Not convinced the rubber rocker gaskets are that long lived either.
by DaveEFI
Fri Mar 20, 2020 9:40 am
Forum: Engines Area
Topic: Camshaft end float
Replies: 14
Views: 165

Re: Camshaft end float

Oddly, I couldn't find a figure for end float in my BL SD1 manual. It could be when running because of the drag from the oil pump etc drive that it doesn't move at all in practice.
by DaveEFI
Thu Mar 19, 2020 4:26 pm
Forum: Engines Area
Topic: Camshaft end float
Replies: 14
Views: 165

Re: Camshaft end float

DavidAll wrote:
Thu Mar 19, 2020 3:35 pm
I agree and then speaking to RPI they say 5mm is normal!
Nothing RPI says surprises me. :D
by DaveEFI
Thu Mar 19, 2020 9:51 am
Forum: Engines Area
Topic: Rv8 oil leak problems
Replies: 4
Views: 143

Re: Rv8 oil leak problems

If you remove the oil filler cap engine running, there should be a slight vacuum there.
by DaveEFI
Wed Mar 18, 2020 9:36 am
Forum: Electrical & Ignition Area
Topic: Alternator question.
Replies: 9
Views: 310

Re: Alternator question.

Talk about over-thinking the problem. Me all over. The fan belt was old and looking slightly scruffy. Keep a new spare in the car, but know it is a bit of a fight to fit, as the alternator is a bit bigger than the original, and moving it in enough to get the belt on hard work, as the bottom hose is ...
by DaveEFI
Mon Mar 16, 2020 2:15 pm
Forum: Electrical & Ignition Area
Topic: Alternator question.
Replies: 9
Views: 310

Re: Alternator question.

After getting nowhere, removed the reg and found a number on it, RTM 153B The old is the top on in the pic. Only other numbers are on the IC itself. https://i.ibb.co/tY4HPbR/20200314-123152.jpg Entering RTM 153B into Ebay search brought up a number of regs which looked the same, which was encouragin...
by DaveEFI
Fri Mar 13, 2020 9:48 am
Forum: Exhaust, Cylinder Heads, Fuel And Intake Area
Topic: Thor Bannana Plenum
Replies: 15
Views: 524

Re: Thor Bannana Plenum

garrycol wrote:
Thu Mar 12, 2020 12:24 pm
No one with knowledge of a Thor RV8 on here?

garry
IMHO it's pretty good at what it sets out to achieve - a nice flat torque curve - out of the box, so not the same scope to tailor it for other things.
by DaveEFI
Thu Mar 12, 2020 3:41 pm
Forum: Electrical & Ignition Area
Topic: Alternator question.
Replies: 9
Views: 310

Re: Alternator question.

Decided to fit a new regulator since this IMHO is the thing that fails in 90% of alternator problems. Snag is it's a non standard alternator for this car. Instead of the original '80s Lucas 75 amp unit with external fan, it is now a Magneti Marelli A127 IM-100 integral fan 100amp, which I got brand ...
by DaveEFI
Thu Mar 05, 2020 9:56 am
Forum: Engines Area
Topic: Warrior
Replies: 10
Views: 342

Re: Warrior

Would the final drive survive the extra torque? It's not got a lot in reserve.
by DaveEFI
Sun Feb 16, 2020 10:08 am
Forum: Engines Area
Topic: Engine Oils. which ones???
Replies: 75
Views: 52280

Re: Engine Oils. which ones???

So a crank driven oil pump seems to drain down much like the dizzy driven one?

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