..update

[Fuse]

Yeah and of course pistons need to be sorted out like Foggy said.. Otherwise valves will hit the pistons.

Btw. what's up with the central part of that turbo because to me it looks like the oil feed is horizontal. At least turbos with conventional bearings don't like too many degrees off the vertical position for the central part.

[foggyjames]

That's well spotted! It looks like the oil lines are horizontal, and the water lines are vertical. It's well worth a craft re-clock of the CHRA..and shouldn't mess anything else up.

cheers

James

[Cloud]

I'm now very interested in a 16v head for my b200e. the b200e inlet and exhaust manifold fit this head? is feuling a problem? any threads on the conversion out there?

[SteveP]

Not sure if a 16v fits a 2.0 block, and it's alot of work to get it to fit an 8v 2.3 block. Fuelling you'd have to go custom and the manifolds would need to be custom again.

[foggyjames]

You'd need the head from a B204....which was never sold in this country. The valves on a B234 head will hit the tops of the bores on a B200.

The 8v is actually pretty generous on a B200. There's plenty to be done before you need to worry massively about the head

cheers

James

[xtrmjks]

Well spoteed! this was "first fittment" picture, it was to orientation of old turbo and been changed since..also oil feed and return are different to pics..Here is some pics of new wheels, will be fitted with 215/45 15 Toyo Proxy T1R's next week..






..they are Compomotive ML, 15x8 et 10

[volvorsport]

im quite interested to see how the transmission holds up .

i dont think the consensus is that 13mm rods will take 2 bar of boost - its just a matter of time really .

dont forget your not loading the engine the same with a slipping clutch .

Anyway when the splines on the torque tube do finally give up - at least you can convert to a decent prop with some engine mounts to replace the engine being supported by the torque tube .

[36016v]

for those wanting to do a 2.0l 16v, the b234f and 204f have exactly the same head, no difference whatsoever. the fueling you could run the standard 2.0l jetronic, just bang in some big 12 ohm injectors and run a fuel pressure regulator and you are fine. I can also confirm that the valves do not hit the pistons, there is a 4mm gap, i just had the reliefs cut in to be extra cuatious as i was going to repace the hydraulic tappets with the renault 1.7 solid ones which fit exactly, that way you could shim the cam to get maximum output, but never got around to doing it.

joni you must have loads of spares left over that peeps on here may want, will fund the development maybe. new wheels look good on it, and it sounds a handfull spinning up at 80mph, thats gonna really eat some fast cars out on the road, looking forward to seeing it again, finished as it should be, keep up the good work

[volvorsport]

b204 has smaller valves , different cams .

[foggyjames]

Aye, the B204 head is a bit different. Bruno in Italy got us pics of the two side by side, IIRC. Did you ever try the B234 head on a B200 for bore clearance, Mark? I might have to give that a try, as we have both lying around, if we get around to getting them in the same place

Some of the yanks have recently said that you don't really need the valve reliefs, and your findings are further confirmation, Mark. That saves some expense for people doing a +16v on an 8v B230. I'd probably want to run stronger valve springs if I was winding it out above 6500rpm without the reliefs as a safety measure...but I'd want them anyway to stop valve float blunting power

I'm also watching your progress with the drivetrain with great interest. I was planning to intentionally limit my 8v turbo to about 250bhp to prevent drivetrain issues...but maybe I can afford to be a bit less cautious? I'll see how you get on, and make that my beta testing

cheers

James

[Jason B]

I'm beginning to think about possibly getting some stiffer valve springs for the 2.3, as I intend to be pushing it out past 6.5k rpm and it'll be a bit of a risk with an H-cam and skimmed head.

[foggyjames]

Not a bad idea. The standard 8v redblocks I've been in which have been wound out above 7k have started to feel pretty 'floaty'...although that could be cam choice, fuelling, etc. They weren't performance motors....they were just driven by hooligans without rev limiters

Dave...you've played with some revvy 8vs...any experience with when the stock springs are too soft...or did you always go straight for stiffer springs for revvy builds?

cheers

James

[36016v]

yes did try it on a b200e when i had an old block lying around, and no contact, put some blue tack on top of the pistons then measured where it mashed it with the valve, no need for revvy engines, all the torque is around 4000 rpm so why knacker an engine just so you can say it revs to 8000 rpm

[foggyjames]

Some of the guys rally their cars, and their class rules state no turbos. NA power without going big with the CCs = RPM. S'alright if everything's nicely balanced...Kev's built engine span up to 7500rpm, didn't it?

Ah, so you checked for both bore contact, and piston contact...and it passed on both? Cool! That's good to know. Not much point in going to find a non-UK B204 head if the B234 head clears. The only remaining issue would be that the fire ring on the HG might not be compressed by the face of the head....but if that's the case, a B230 HG should do the trick. I think B230 ones have a larger diameter fire ring....and it's B21s which have the same HGs as B19s/B200s. Could be wrong though

It's good to get some answers to these questions

cheers

James

[xtrmjks]

Fitted new wheels and finished off some little bits...this is how it looks so far. Next....