The other rotary Westfield!

[Smiffers]

Jtech - 0118 947 9555

Ask to speak to Jamie and tell him that Jonathan with the rotary Westfield put you in contact.  I don\'t know if you have a base setup in mind but you are welcome to mine once I have tested it on the 20th.

All the best

Jonathan

[boosted]

Cheers mate. Cool. will be done when new wheels on. ....so no hurry! Good luck for the 20th!

[boosted]

Oil leak sorted by Carl and the guys at Hayward. Too much premix. Carl spotted my air filter is 2 small so thats off using gauze at mo...car is flyin...a4 on way home much fun....but so bumpy broke the rivets on the rear diffuser...so had to take it off...how do you transport it in a westy...had to fold in half.
thanks guys big time !

[Smiffers]

So in general Abingdon went very well, car made it through the entire day

Some positives...
The base handling setup was very good, couple of clicks on the back as the car tended to wash out under acceleration. I may add a little more front negative camber but I will test that synopsis by measuring temps next time out as it is marginal.  Limits felt very neutral when reached.

Some things to work on...
Cooling - 100C Water 120C Oil after three hot laps.  Going to move to a larger cooler 25 row and duct the radiator into the nose.
Gearing - I was hitting 125mph and not getting out of 4th given the aero on these cars limits to about 150mph tops I seems those other gears could be put to good use else were!
Fuel - Fuel surge issues, right handers are great left handers high G car cuts out.  So 50% perfect!  The down side is that when the car cuts out it gets very unbalanced and increases the work rate of the driver considerably...  It is like anti-traction control.  I\'m running a Bosch 044 pump and apparently they are a little sensitive to the head of pressure on the input side to the pump so I have a few options:
Increase the low pressure side pipe diameter to AN10 (From AN8) this gives a higher mass flow rate potential on the low pressure side of the pump (AN8 High Pressure side).
Move to a surge tank + Lifter Pump system with the surge tank mounter high above the 044 pump.
Try a different pump.
Try a different tank setup.

[re japi]

Car is getting ready. There is allways some minor problems with new cars. And you allready seem to have cure for you little problems. Its allways a good thing when you know what to do...

So next time your car will be more complete

But you made one mistake, you didnt share vids or clips with us

[boosted]

Hi mate.

couple of things

1 have you filled your fuel tank with baffle foam ..in expensive and serves to purposes..anti surge and explosion safe....my tank is brimmed with it.
2 on the roadgoing rx8 there are 2 oil coolers i had this prob and the addition of 2 has increased oil capacity and temps in this recent hot weather for oil have been under control...you have to buy another oil cooler you may as well plumb in 2.
3. Gearing yes think we both need different diffs..im on 4.1 atmo prob going to 4.7 but holding off til slicks are on and see what its like.
4. Since i ducted in my nose coolant temp again seems sorted recently at Carls drivung the car hard temps got to 98 when lost ticking over and soon as moving ducting brought temp right down.
can i ask if you left leg got hot as all that engine heat has to go somewhere....im going to drill 3 large 80mm holes in rear tub to evacuate the hot air....yours is completey flat and plated underneath so that hot air has togo somwhere.

br Jon

[Smiffers]

1. Yes tank is brimmed with it, I\'m going to go with a swirl pot fed with a low pressure lift pump with a low pressure valve in the tank return. This way I always have a few psi of head pressure regardless of tank fuel remaining also makes it easy to swop between tanks without a change in fuel delivery characteristics.
2. Indeed I think I will copy you!

All of me gets hot!  Yes it does and yes I will be taking the hole saw to the back

[Smiffers]

As an aside; do you feel like you helmet is going to be ripped clean off your head at 110mph plus?

Any idea how to make that better?!

[re japi]

Btw, did you know that poor quality foam will melt to the tank. Few good quality brand´s tanks has bad foam on their cheapest fuel tanks...

[boosted]

As an aside; do you feel like you helmet is going to be ripped clean off your head at 110mph plus?

Any idea how to make that better?!

lol yes...my eyes are shaking so much! My seat back is high and i put the back of my lid onit.

First race my screen misted up open the visor slightly not good dry eyeballs lol!

All good fun though. Got Coombe monday for more testing so wil see where we are after that.

Re japi...foam is fia approved so should be ok.got from Merlin Motorsport over here and fully trust them. They would not sell it if melted also listed in Demon Tweeks so good stuff.

[Smiffers]

I have just learnt about helmet spoilers, apparently that will fix all my issues! At 100 notes I wonder if they will air condition my nuts?

Ordered up the swirl pot, lift pump and some more expensive fittings, easy come, easy go!

[boosted]

Yep...£££££ moneypits! Se stands for serious expenditure!

[Smiffers]

Well, it was about time for an update...  Been a busy year but I am now happily married so there are now no jobs left before this car gets prioritised!

So when I left you last time we had some fuel issues, oil burning issues and temp issues out on track.  In no particular order these are some of the bits to make that better and some new little bits I have been working on to make the car a little more 'professional'.

The fuel system got a complete make over.  I welded up a custom Ali cell to sit above the diff and feed a swirl pot mounted in the original tank position.  Swirl pot is fed by a lift pump (Red top) the swirl pot in turn feeds the 044, return the swirl from the regulator up front and a return from the swirl back to the main tank.  The idea here is if I am circuit racing I have enough fuel onboard for the duration, for hill climbs I can just use the swirl pot capacity (plus a little to give it a head of pressure).  Here are some pics of that handy work.  First go a tig welding Ali so a little ugly I'm afraid (but fuel tight and made to fit).

[Smiffers]

The oil burning never got sorted with any non-invasive options so engine has been swapped out for a R3 engine I had knocking around for spares...  Turns out the 300 quid ebay engine is a lovely little runner...  I lucked out big time, had to do a few things to get the R3 changes intergrated but nothing an afternoon of fabrication and head scratching did not sort out.  I have the map roughed out to get it running and took the opportunity to scale the new map to 200kPa (just in case)

Cooling has been upgraded, much bigger cooler is in and ducted into the front splitter, radiator has a hermetically sealed surround to the nose cone. Hopefully that will sort us out, if not I have also made provision for a second cooler behind the rad.

[Smiffers]

Also been working on some nice little changes to improve things a little and fix bodged brackets and such like...

First was to enable the fitment of a little denso 40A alternator to gain a little space up top (this is related to my 200kPa map).  So I got the CAD out and went to work on on an alternator adjustment bracket to let me fit it.  Also added some Rivet Racing branding.

Here is the prototype for that, some tweaks needed to be spot on but works very well.  Yes the alternator is tiny!


Finally been working on a nice solution to holding the AC Delco (LS Yukon) coils I have been using, another work in progress.  Should have that finished this week.



I will try and keep this a little more updated over if anyone is interested!