The V8 Owners Forum -

Strange. Do you have a BOV at all there to vent excess pressure? Thoughts on possible causes. 1. crankcase breather blockage. Unlikely but possible 2. Lean misfire. Either not enough fuel or too much advance. Engine spits back out the inlets. Large bang occurs, then if lean condition continues engi...

I've tried locking the recirc valve open so there's no boost (very little boost, anyway - it can still build up a small amount of boost because the recirc valve is a bit restrictive) and it didn't seem to cure it.

I've got a 4.6 RV8 with a M112 supercharger fitted using a custom manifold. There are some pictures here: http://www.tvrsseries.com/sowners/greenv8s/greenv8s.htm The basic layout is a throttle upstream of the blower, quite a long manifold leading to a plenum feeding all eight cylinders via very shor...

Do you have an electric oil pressure gauge? If so, it's possible that the gauge is lying. This could be a fault in the sender itself, or in the wiring by the sender. Either of these could be affected by the movement of the engine as it is revved, and erratic gauge readings are a classic symptom of t...

That happened to me when I pushed them on firmly with a socket thinking they were 'home', later found that they needed a very firm tap to get them on and all I'd done was get the edge of the seal onto the very end of the guide. I suspect that you mad the same mistake.

kiwicar wrote:OK Gav
in that is the case go for 8 to 8.25:1 CR, 13 to 15psi boost

If you're going for that much boost then the Eatons are definitely the wrong choice of blower, the efficiency drops off quite sharply with backpressure. You need to look for something with some internal compression.

Slightly different shape and one grade hotter.

Assuming you do check that the noise is coming from the engine itself, I remember hearing about a phenomena termed cam walk which can result in some very heavy knocking noises. As far as I remember it, the problem occurs when the cam has end float and moves so far that cam followers start catching o...

I use NGK B7ECS in mine, and this seems to be widely recommended for all the later RV8 powered TVRs. (On the earlier 'wedge' models, the usual recommendation was one grade hotter i.e. a 6.)

Oh come on reinstall is only if its completely knackered lol. I know I do this for a living I don't do it for a living, but I spend *far* too much time fixing systems including a great many that people have had a go at fixing themselves and got in a right mess. If you're willing and able to roll yo...

If your machine has been compromised then unless you believe you are smarter than the guy who wrote the virus, the only safe remedy is to reinstall everything from scratch. You'll often find that one infection is used to install others; even if you find one, there's no realistic way to be sure you'v...

thev8kid wrote:have ordered the gaskets,
will keep you all posted if they are the ones as per the picture,

Thanks - I'd be interested to know if they seal any better than the usual smooth surfaced ones.

To observe what is happening one would need an oscilloscope on the injectors. Not normally within the ability of most of us. If you put a 12v LED in parallel with the injector, it responds quickly enough to be visible when the injector fires. At cranking speeds you can see the individual pulses, an...

ah yeah seen them before, im trying to locate the ones that i have in the pictures, as these seem to be the best ones i have used for sealing so far. Sorry those aren't what you want. By chance I came across this advert recently which looks very similar to the ones you asked about: http://www.cleve...

I think the standard maps are usually set up for 2.5 bar, but if your ECU has been remapped then it may require a different pressure. I don't know what the ECU will do with an open circuit on the coolant temp sender, but if it takes the resistance at face value then this corresponds to a very cold e...