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Yeah I can see your logic there mate, and it's a valid point you've got.

Agreed. Rebore may not strictly be necessary though if you've got a block in good order. Obviously needs to be measured before any decisions are made.

All depends on the engine and cam spec. 421's = stick with stock imo.

Cup racers were 20mm wider track per wheel so you need 20mm to be safe mate. There's a few on here that have run the vw box mate and there's custom flywheels available. @Andyrg@ ClioTurbo has done this conversion and I believe can supply the parts you'd need.

1k for forged Pistons is a bit ott mate. You can get piston AND rod packages for £600-£700 from pec if you go to th right places.

What gearbox do you intend on running with? The outer cv joints off a 1*2 will fit the ex cup racer hubs you have as well, so you may just need to get your original driveshafts lengthened or remade. Standard jc5 will be chocolate in a rally car though if you intend on giving it some abuse...

You could enlarge the pockets on the oe Pistons to run 422's or 423's. Iirc you need to increase the pocket depth around 1.5-2mm. But those profiles work better with higher comp ratios. You could always fit a set of 197 Pistons if you really wanted to do it on the cheap and not bother with...

No I forgot!!! Lol! @BIGASH fancy some karting in MK? Lol

Yes mate. I'd focus more on where the exhaust manifold is tbh and I'd do the same on the front seal. On mine I have no skins so the added airflow helps no end in getting air into the v6 airbox.

You could take the rear bonnet seal out, but I'd leave it in place where the heater air inlet vents are!! Otherwise you end up with warm air coming in through the vents. It's only a matter of trimming it to suit.

mcracingsa.com mate.

Your sure it's not the throttle body sticking? Is it on a lpt conversion as well? So standard pistons? Only asking as oil out the breather isn't a good sign on these engines.

422's and 423's are more suited to high comp. I'm not saying 421's won't work because they will and do, but if your going to the expense of bigger valves you might as well maximise everything else and put another set of cams in there. Otherwise stick with standard sized valves as the performance...

No problem mate.

If I were you I'd be getting the supertech valves going off the spec of your engine mate. They're available off the shelf too. I'd switch to 422's or 423's as well.

Here you go @bozothenutter

Will do!

Ain't they just! Works with ph1 or ph2 as well.

Always available around those times mate!

Swinging by on your way home then??:tonguewink:

You know what airbox to get @Ph1 Tom :smile:

Honestly mate you'll never tell the difference with parallel extensions going on to the tapered lower half of the manifold

Depends how much of a taper it needs. I'd use a carbide burr in a die grinder or high speed drill and open it out. I'd go about 50-70% of the way up the extension and keep checking your not taking too much out with a internal caliper. Then I'd use an 80 grit sanding drum to finish off the...

Your better off fitting a stack dash or a dash2 mate. Reason being, you can have as many gauges as a fighter plane, but how often do you look at them when your racing? I'll answer for you, once, maybe even twice! Single gauges only work if you have warning lights to alert you of an issue. I...

It's warm white your after mate if you don't want them too intense. A lot of the ones you can get look more like hid lights which is ideal for a living space. Not!! Lol

I've got 9 led mains voltage downlighters in my kitchen sonny, and fk me they're bright!! As said by @Mini182 they're really good. I'll be getting some more for my garage soon

Yeah toe in wouldn't have been helping. You also need stiffness at the rear for track work, but that goes against everything you need for rallying/road rallying.

1/2 a degree toe in at the rear isn't causing your turn in problems I'm afraid mate. It's more the suspension that's doing that. What's the spring rates you've got on it? Also how low is it, as the roll centres play a big part in getting them to turn in.

Get ready for a tail happy cup if you run parallel at the rear mate.

Flol! I'm filling it full of unicorn semen. It's apparently good for reducing friction and works better than Teflon. Not sure on the texture though - it's a bit gloopy. :tongueclosed: