Mcalvert

Well... It's been rather too long since we have had any Xflow coverage in LF (mind you, I should probably declare a personal interest in the subject )  Best of luck with finding the source of the problem, and I look fprward to reading about it in what ever medium best suits!

POSTED ON BEHALF OF TONY PASHLEY

Hendrixs…

I don’t know if you’ve been able to make any progress; if not, this may be of interest.

Do you have a mechanical fuel pump?

I experienced precisely the same symptoms that you describe in post number 3 above - even down to the car letting me down, likewise, en route to an MOT test (in my case, in the middle of five lanes of M25 in the morning rush-hour).

I, and several others, had convinced ourselves the problem had to be electrical but couldn’t fathom it out (this is on a Xflow/carbs/electronic ignition/dizzy/no EM). I gave in and resorted to ‘diagnosis by replacement’, swapping out as much as possible from my stock of spares - all without success until I finally removed the mechanical fuel pump. The movement of the actuating lever felt inconsistent and just a little ‘jerky’. It was not really clear to me how a faulty spring or diaphragm could be interacting with that particular time/temp/load cycle, but once I’d fitted a new fuel pump the problem disappeared instantly and entirely.

I’ve since switched to an electric pump, but for reasons unrelated to this failure.

Your case may be different, but hope you can resolve it soon.

Tony Pashley.

What a brilliant venue and a great weekend.  So glad that Wiscombe is still on the calendar.

Here's how it looked from behind 8 valves

Equally, I took the car out for a run on the road today and the clutch cable snapped within 1/2 mile.  Looks like I was lucky

Congratulations Shaun - a very well deserved second overall championship win

Digit finally extracted, and entry form submitted

HendrixsWhiteStratReturns,

I'm genuinely interested in why you say that.  Without wanting to tempt fate, having been properly jetted on the rolling road 5-6 years ago, my Webers never get any attention.  Maybe I might check the balance between front and rear once a year (2 min job), but other than that, they just work.  Now, I don't do the miles these days that I once did, but the car starts easily (battery kept on conditioner) and the carbs are just not something I ever think about.  What issues do they give you?

Oli - Tam could really use a cat to kick today, so when you do find your ill-gotten "jumper in waiting" could you send it our way please... 

Cracking weekend.  Great battles throughout the classes.  Great banter.  Fab...

A Xflow upgraded with 3D ignition (as many are) need not be that thirsty.  I certainly know of someone with an (admittedly highly tuned) Duratec who gets far worse fuel efficiency than I do with my 1700 Xflow.  I am probably biased, but I love my Crossflow and it has done me well on road, track and sprint for coming up 20 years now.  I've sometimes dreamt of more power, but in reality, its 150bhp is probably not far off the sweet spot for performance in a Seven.  When I first had the car, parts could be picked up in scrappies for next to nothing.  That's certainly not  the case any more, but everything you could possibly need is still available, often manufactured to far better quality than the originals.  Pick up a Burtons catalogue for details.  The achillies heal of the original Caterham 1700 Xflow was the pistons which were only generally good for 20k miles.  I doubt there are many engines out there on the original pistons however.  Ideally, you'd be looking for an engine which had been upgraded to forged pistons which are stronger but also lighter and lower friction.

Mark YHM

Have to agree that Lynn did a fantastic job.    Quite how she managed to keep up a commentary all afternoon without even the benefit of being able to see what times were being set, I'm not sure...

Mind you, I don't know what she said about me.  If I did, I might not be feeling so generous!

Great weekend all round.

No ideal what brands you have access to, but the Champion filter to use on the Crossflow is C103  (for both 1600 and 1700).

Could I suggest you head over to the Club Speed Events forum where there is a lot of discussion on this topic going on currently (and a lot of knowledge)

Bill - I think that is what is called an "editorial cock-up" - sorry

Maybe see you there anyway?

Cheers Chris - confirmed

Nothing I can see here Chris?  What was the title of the mail?

Different sizes left and right if my past performance is anything to go by!

To carry this to its logical conclusion - where are people buying their ZZSs from, and what are they paying?  BMTR looks like £120/corner, but Birmingham isn't desperately convenient for me.  Other than Avon directly and CC, anyone else I should be looking at in the SE?

Cheers,

I received a 10% off voucher for Grand Prix Raceware with my MSA license this year (not as good as the VAT free available at Autosport Show, but better than nothing!)  Otherwise, if buying from DT, ask for Dave Kimberley  who is/was? a Club member and will normally offer 10% off too...

No, I don't have the certificate unfortunately.  If someone with an FIA bar could tell me where their Arch FIA sticker is on the bar or Petty strut, I#d appreciate it

OK, so I have now got an ARCH FIA sticker for my tall FIA rollbar.  I only seem to remember seeing these on rollbars themselves, but the post above refers to it going on the petty strut.  Which is correct please?

.

Hmm, so your bars have both an Arch Sticker and an "FIA approved" sticker? 

Sadly, neither my tall bar (purchased second hand, stripped and repowder coated) nor my petty strut have anything on them :-(

Thanks (I think!).

So, we think the Tall FIA bar was made by Safety Devices?  Any idea if there is a serial number to look for somewhere? 

Sorry if I've missed something obvious, but do Specialist Roadgoing cars running FIA bar & Petty strut require the FIA sticker, or is the material type/diameter/thickness likely to be sufficient?

Cheers,