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Long stroke mean a cap on revs to 8k really but that's not the point. The point was that they are hard to tune vs xe or ztec etc but that's not the case. A 240bhp engine would have to use the same spec parts so don't see its cheeper than an F4. Infact a Zetec head is crap and may need more work...

anyone really just don't think f4r is hard to tune, in fact I think it's easy now and 240 ish motor would be the same price. Just more options with xe's etc.

Agree bhp vs £ an xe /. Ztec would not be any cheaper than an f4 to get 240 bhp. yes more options for other engines but don't see where it's cheaper?

Why don't you get spacers from jenvey rather than get trumpets? Cheaper and don't need a larger filter.

agree, s2000 engine are 280bhp on single tb. Price !!! So very good and a pointer for solid lifters for people on here with comp engines.

I have a 237bhp road f4r and a bit more in a rally one. Interesting thing is that it takes a lot of revs to get the peak bhp and torque is quiet low for the spec. With itbs you would get more torque as the rs 2 seams to produce lower torque figures than itbs so needs lots of revs to get 230 and...

Could you not just get some spacers made to make it work?

Interested in what gains you get when fitting the new PM exhaust manifold. When you fitting and getting remapped?

So does the tatuus fuel rail fit jenvey itbs?

You need the cup / later arms with more caster. Quick search will give you the number or get the pure Motorsport ones that use the correct wishbone plus fit rosé joints like their rear beam kit.

They are only rated for group N use, 165 lb/ft. But sprinting is only point and squirt for a minute or so ;)

What width is this one and others use as some are very narrow. With itbs you can go wider than standard to more Than compensate for the lack of height.

Will need a decent gearbox !;)

Who's car is it going in?

What's your thought experience with coil packs? Was told the clio one is quite a weak spark and needs the precious metal plugs to run right as a result.

And reduce the rod angles I guess, be interesting Godneys on solid lifters and some 305 cams etc.

i have ones of these from the pink car engine, was wondering why not to use it as I was told it delivers a stronger spark and more reliable. http://www.efi-parts.co.uk/index.php?productID=121

2118s are crap for wheel clearance, the old Williams speedlines are so much better when going 15"

Really interesting Ian G's car and the PMS engine follow nearly the same line until 6kish. Guess the use of wilder cams and solid lifters would be the reason more so than the manifold as that was for low down so the 182 manifold seems to do a good job concidering is doesnt have an 8 injector set...

What gains are there when you have a 230-240bhp engine?

would be interesting on a 230-250bhp engine what different the 3 manifolds make 172 vs 182 vs PM

expensive.! Sandy, can you overlay the PM vs Ian G to show where the benefits are of the increased spec.

What head mods (minimal matching or full rework / shaping etc) were done to the Pure MS engine?

Park and ride are all the rage...

It does look very square agree. The f7 is more angled so will measure mine tonight.

Car does sound very different from before.

Is the f4 head square or angled, so on the bench what angle is the exhaust face vs vertical? Tell me that angle I can do the rest.

Re: sonny172cup "track racer project" How much?

Chip thanks for the offer, what i need is the difference in angle (guessing height and offset will be near as damn it) of the head F4R vs F7R. F4 looks square to the centerline of the engine where the F7 looks angled. With this i will just weld on the flange at this new angle. If you get my drift.

Guess a f7r super sprint fits? http://www.cliosport.net/forum/showthread.php?264615-Rally-Clio-Winter-Project-Thread/page7&highlight=Clio+rally+build