Search found 3932 matches

by DaveEFI
Mon Jul 22, 2019 9:31 am
Forum: Electrical & Ignition Area
Topic: Micro sguirt
Replies: 4
Views: 44

Re: Micro sguirt

Yes - I went from the flapper system on my SD1 to MS2. The really big improvement was low to medium revs grunt. Became just like a V8 should be. And it no longer had good and bad days. Not sure you'd get the same improvement with a hotwire, though. One advantage with the MegaSquirt2 on the flapper i...
by DaveEFI
Thu Jul 18, 2019 1:10 pm
Forum: Electrical & Ignition Area
Topic: Micro sguirt
Replies: 4
Views: 44

Re: Micro sguirt

Measure one with a DVM. Low will be under 3 ohms or so. High, something about 10 or more. The Lucas flapper injection uses low - and a resistor pack. All later Lucas, hotwire onwards, high. So on a 1998 vehicle, high. Personally, I'd not go for a MicroSquirt, which is really for bikes etc where spac...
by DaveEFI
Thu Jul 18, 2019 9:09 am
Forum: Exhaust, Cylinder Heads, Fuel And Intake Area
Topic: SU HiF6 weird problem on a 3.5 Rover.
Replies: 35
Views: 1442

Re: SU HiF6 weird problem on a 3.5 Rover.

My first guess would be an over-run valves opening when they shouldn't. I similar - but not so bad - problems on my P6 3500S. Some solder them closed. I fitted plain discs.
by DaveEFI
Wed Jul 17, 2019 12:04 pm
Forum: Exhaust, Cylinder Heads, Fuel And Intake Area
Topic: Fuel pump.flow pressure
Replies: 5
Views: 125

Re: Fuel pump.flow pressure

Just a comment :D Setting the pressure with the engine stopped may be fine on a brand new vehicle. But with an older one, where there will likely be more voltage drop - and possibly a tired pump - I'd have thought engine running with the voltage that gives a better way?
by DaveEFI
Tue Jul 16, 2019 3:13 pm
Forum: Exhaust, Cylinder Heads, Fuel And Intake Area
Topic: Fuel pump.flow pressure
Replies: 5
Views: 125

Re: Fuel pump.flow pressure

The nominal pressure on a flapper is 36psi which is 2.5 bar - checked vacuum disconnected, so the maximum. But when I had an FSE rising rate, it didn't seem to be right, so raised it to 38 psi. Not sure if the hotwire is the same. But if the EFI mapping is correct there shouldn't be a need to use su...
by DaveEFI
Thu Jul 11, 2019 8:55 am
Forum: Electrical & Ignition Area
Topic: Quick question about distributors on RV8
Replies: 2
Views: 52

Re: Quick question about distributors on RV8

Pretty certain it will fit. But if you're going to control the timing with MegaSquirt, I'd go wasted spark. A Quadraspark unit for MS and a couple of EDIS coils. Trigger wheel and sensor kits are easy to get. And gets rid of the problems with dizzy cap and rotor arm. If you lock the dizzy to give a ...
by DaveEFI
Wed Jul 10, 2019 12:50 pm
Forum: Exhaust, Cylinder Heads, Fuel And Intake Area
Topic: SU HiF6 weird problem on a 3.5 Rover.
Replies: 35
Views: 1442

Re: SU HiF6 weird problem on a 3.5 Rover.

Have you looked as the fuel flow past the jet at idle with them both set approx the same mechanically? A decent torch will be needed. Might give you a clue if it is very different. There must be extra uncontrolled air getting in somehow. Are they solid discs or fitted with over-run valves? BTW, the ...
by DaveEFI
Sun Jul 07, 2019 5:52 pm
Forum: Exhaust, Cylinder Heads, Fuel And Intake Area
Topic: Rv8 3.9 problems
Replies: 2
Views: 82

Re: Rv8 3.9 problems

What does the wideband read at low speed cruise? It would generally have to be far too rich to cause a stumble, but only slightly weaker than it has to be for decent economy. But a weak spark will have more trouble firing a weak mixture.
by DaveEFI
Fri Jul 05, 2019 1:21 pm
Forum: Brakes & Suspension Area
Topic: Flexible Brake Hose
Replies: 6
Views: 244

Re: Flexible Brake Hose

Make up a new brake pipe with a suitable end? Both imperial and metric are still easy to get. Solves the problem for next time too.
by DaveEFI
Mon Jul 01, 2019 8:57 am
Forum: Engines Area
Topic: I've got a chatty engine.
Replies: 22
Views: 568

Re: I've got a chatty engine.

I use locker/sealer on every thread that goes into aluminium. ScotchClad 776, as per my very first Rover V8 factory manual. Stops them corroding too, so they will undo when needed, rather than shear, even many years later.
by DaveEFI
Mon Jul 01, 2019 8:48 am
Forum: Electrical & Ignition Area
Topic: 24v RV8 Starter Motor
Replies: 10
Views: 104

Re: 24v RV8 Starter Motor

Result. :D
by DaveEFI
Sun Jun 30, 2019 12:02 pm
Forum: Electrical & Ignition Area
Topic: 24v RV8 Starter Motor
Replies: 10
Views: 104

Re: 24v RV8 Starter Motor

As regards the after market units like Power Lite, I think they use a stock motor and possibly gearbox, with only the mounting being special for the individual engine - no different from Lucas, really. So if a 24 volt motor was available, it would be no big deal to swap it. But you could ask them if...
by DaveEFI
Sun Jun 30, 2019 9:37 am
Forum: Electrical & Ignition Area
Topic: DTA E48 on RV8?
Replies: 4
Views: 119

Re: DTA E48 on RV8?

If you have a working dizzy, you could use your ECU fuel only?
by DaveEFI
Sun Jun 30, 2019 9:32 am
Forum: Electrical & Ignition Area
Topic: 24v RV8 Starter Motor
Replies: 10
Views: 104

Re: 24v RV8 Starter Motor

I have an after market Hi-Torque unit on my SD1. It uses a smaller permanent magnet motor which runs at a higher speed and a reduction gearbox. The motor itself is Denso. Not sure if that motor comes in 24v. But the motors are common on modern cars, etc. Many of these after market units have a used ...
by DaveEFI
Sat Jun 29, 2019 11:45 am
Forum: Engines Area
Topic: I've got a chatty engine.
Replies: 22
Views: 568

Re: I've got a chatty engine.

scudderfish wrote:
Sat Jun 29, 2019 11:04 am
Woot! I have oil pressure at idle and the noises are gone :)
Excellent. :D As a matter of interest, did there appear to be plenty oil getting to the valve gear?

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