Mark Shead

When I looked in to the race fuel I wanted something that made more power without the need for lots of extra timing, The FTW seems to fit the bill on that side,
We could run Vp import but to make that really work it would be better to run circa 9.5-1 rather than just adding extra timing.


Mark

Mark Shead

Why would we do that, Remember we are doing on a pure YB block and head and not the higher flowing Smith and Jones head and taller block for better rod angles,
It is harder to do the 1000hp on a YB for that reason,
Also I hear they are now having to rev it to 9k as it does not have the response lower down,
Rods engine is in his road car and need to still respond like that, We could easily make the power easier with the change on head and block but this will add a circa of 10k on top of what we have already spent.


Mark

Rod-Tarry

To add to what Mark has said. We now fit 55% higher shear strength bolts & have done block mods to aid head gasket integrity. However Mark does not want to add extra ignition than we did on the 838 engine that proved safe. The Purple does not need extra ignition just extra fuel to make a 10% increase over 106. The vibration mods will be more critical at this Power level than gasket integrity im sure.

JamesH

iTrader: (21)

Ah ok that makes sense. Sounds like good progress! Would be really interesting to know the peak cylinder pressure at high compression, high boost and decent fuel!

I really hope it goes well

Fullflush

Mark - I didn't appreciate the differences. One question, why is revving to 9k + a bad thing?

opposite lock

iTrader: (3)

i think he may be saying Its not road friendly unlike rods engine.

Caddyshack

Everything else also struggles, add 1000 rpm at the top end and oil pumps, water pumps, cams etc are all stressed.

Engines that need loads of revs to make the power are hard work. If you drive a 330i or 328 BMW then try an e36 m3 it s amazing how hard you have to work to release the extra power.

Rod-Tarry

My last engine revved to 9k but it didn't need to be driven like that. Mark would read the riot act if he read my data log & he saw I was using too many revs Mark don't like rev cuts so it was down to me to be sensible, in mine changing at 8.2k gave best progress but sometimes I used a lot more. Bit shocked to see 193mph (8.8k) in 4th on the Newbury Bypass but its recorded although it wasn't me Mark . Ive a dry sump fitted to this new engine just in case I start using all those revs again . Its not a bad thing but will shorten the life of a road engine.

JamesH

iTrader: (21)

opposite lock

iTrader: (3)

193 in 4th ........... Once done , we need more road footage thats just bonkers lol

Rod-Tarry

Mark looked at my Data & asked what speed was 8.9k in 4th I said 193mph on the Stack if you do the maths on gearing its actually 190.0 .

opposite lock

iTrader: (3)

Mind blowing stats.
what with the extremes and nessasity for the calculations, would any extra weigh 'hurt' that last few horsepower for top speed?

how much heavier will it be if at all.
cheers
mike

Rod-Tarry

Well its 2015 & my New Years Resolution is to finish the car this year .
Start next week with a trip to Vibration free to pick up pistons & cams. Will also get the sump sent out for a mod so the dry sump will suit my application. THEN NO MORE EXCUSES FROM MARK OR MYSELF.

costina

iTrader: (1)

Happy new year to you Rod be interesting to read about the build.


Regards


Paul

Rod-Tarry

No weight is not really a factor its just bhp v aero brick wall. Gain 100m at the start with less weight & that's only 1 extra second on the throttle at 210mph when you are deffo struggling to acclerate. Stability from the extra weight as speed goes over 190mph more than compensates. These cars were not put in a wind tunnel to see what happens at 190+mph they move about a lot is all I can say. The car will be slightly heavier I suppose but we always run fully loaded so it will make no difference.

bluntys1rsturbo

great to hear this legendary car will be back out again this year look forward to seeing how you get on

Rod-Tarry

This is a long shot.
I need a 80mm 4bar Boost gauge. Only one I can find is a Stack which would be perfect. Problem is they have not been made since 2009 .
Ive asked in the Wanted section as well


Cheers Rod

CrOwSoN15

Just had a look around and I see what you mean, everything is 3 bar! Do you reckon a company such as Stack would be interested in doing a one off for you?

ajamesc

Can you not just use one of the smaller spa digital ones

Rod-Tarry

I could but my present one is 80mm to match the Rev Counter/Speedo/Odometer.
There are still a few Stack 3 bar ones around despite not being made for 5 years.


My present set-up a 3bar Elliot gauge the Stack 4bar would look so cool I must find one.

costina

iTrader: (1)

Only one i could find is on the cossie dolly ALG 1K .

Good luck finding one.

costina

iTrader: (1)

Shame I found a 3 bar


http://www.mardigras.co.uk/sale.htm

Rod-Tarry

Yes !!
Mike R has one as well but the 4bar version is difficult to find.

Thanasis

iTrader: (3)

http://www.speedhut.com/gauge/GRM258...ic-(w--warning)



http://www.speedhut.com/gauge/GRM-BO...ic-(w--warning)

Rod-Tarry

There are lots of 4 bar gauges at that size. Im looking for a 80mm (3 1/8") gauge & cant find any .

costina

iTrader: (1)

I will keep looking never know eh.

Paul

lee2cossies

iTrader: (2)

Rod, wasn't miker breaking his car? He did put a advert up on the escort forum a while back may be worth giving him a pm.

jamie956

Slightly bigger than your after but close,


http://www.speedhut.com/gauge/GR338-...si-(w--warning)

Rod-Tarry

Interesting. Bigger would be OK.

Rod-Tarry

That's a solution that site. Can design what you want its 91mm OD against the Stack 88mm.


Obviously the first design is my preferred one.

Jay,

iTrader: (4)

My god some of the faces on those dials

Rod-Tarry

Jay you can design what you want that's just 4 I dreamt up. Will probably go with the 4th one as it nearest matches the Stack.

jamie956

Have you looked at the GPS speedos unsure off accuracy but got to give you a better idea at top end over the std speedo, 52mm as well for pod mount.


http://www.speedhut.com/gauge/GR2-GP...r-Gauge-200mph

nixon_2wd

I agree. Send them your Stack tacho and make them match your new boost gauge.

Are we getting to see some more pics of the engine coming together soon?

Jay,

iTrader: (4)

Ah ok mate

Rod-Tarry

I have a Stack it was 2mph out from Datron at 206mph as its calibrated to tyre diameter.

Rod-Tarry

Can a 800bhp be driven on the road without any probs. These 2 vids were made by a Ferrari owning friend. One ive never seen the other maybe at the time. Love his chuckle on the 2nd Vid.

ajamesc

Crazy how fast that is rod! I clocked 150 on my r1 up that road from roundabout to roundabout he just called 140 half way up there lol

Rod-Tarry

Well before the bridge as you can see. He did it in his Ferrari & saw 92 on the Speedo at the bridge. Mind you its a shite Ferrari .

Caddyshack

You know people have been prosecuted on the strength of these types of videos....great to see but do be careful quoting speeds and certainly do not show the speedo.