fbekholden.com

Heres a thought starter for the group . what are people thoughts on good carbie and cam set ups to sportsz up a grey motor ?

Hi EKBlue mine runs Tripple Strombergs and a 40/80 cam & a modified head with red motor valves goes hard (for a grey) but a milder cam and twin strombers would be more streetable especialy with the 3 speed crash box a

Cheers

I've been extremly happy with my hot grey
Triple strombergs with venturi restrictors, 37/73 cam, ported head
red motor inlet valves, full balance, light flywheel.
Behaves nice, Revs HARD.
Parisian62 come for a spin with me at the Forbes Nats,
speek to him about it
We had 3 adults and a kid in the car on that burn,
which you do notice the extra weight, it picks up revs much quicker
when your alone.

Here's a copy of my chart when I had it dyno tuned when near new.
I'm not to sure what it means, I'm assuming 76 HP at the rear wheels?



Cheers
Jeff

jeff, how much was the dyno tune approximatley.

Ive always wanted to see one of my cars on one.

stew, mines a 30/70 (a 25/65 also great), double strommie, 186 valves, slight shave, unleaded conversion. Goes ok, but at the end of the day the more pressure you put on the crash, the more gear boxes you will destroy.

If you want to have a go at mine, the keys are yours buddy.

I have also had another motor with a yellow terra build head, with doublesprung red valves, big shave and port and polish, wacked that onto an ej 138, and she also went well with a period holley. I still have the holley, but the motor is around in toronto i think, i may be able to chase her up cheap, but it will need rings i think (thats why i got i took it out of my fb).

My fe ute was a internally bored 149,with a 25/65 cam, stock carbs (now) did have tripple su's, larger valves, and mild port and polish with shave, drove nicely, picked up smartly, and riped the hell out of first gear on a full gas takeoff.

Over the years, ive heard some wild grey storys, get into some old speed way mags and boat racing mags.

Hi folk,
I recently got invited to take a peek at Peter Brock's last Holden he raced - an FX numbered 05 of course.
He raced it at Woodward in England prior to returning to Aus and that fateful rally in WA.
The chap who now owns it started it up for me and I have to say - I was stoked........... I shot some movie film of it running with my box brownie Kojak - pretty lame, but it just oozes life.
I can probably find out what was done if someone really wants to know - the engine was built by Graeme Tate - his brother is a fellow train driver.
Apparently there is not much Holden in this engine..............

Sorry, rattling again.
Jeff - I have had a good look at your chart.
I don't have any experience with reading them, but from what I can fathom -

the reference up the left side of the chart is your bhp.
Across the bottom is speed in km/h
and up the right side is torque - I think in ft/lbs.

the actual graph models are -

the main one which rises, peaks and starts to fall is bhp
the one which starts and gradually tapers of is torque.
both graphs relate to the speed and are plotted with cross reference to one for bhp and the other for torque - both at the speed as they appear across the chart.
I'm too tired to go look for your details as you posted some months back
What diff ratio and wheels are you running - I can probably give you an approximate tacho readout at the respective speeds across the bottom scale...........

hope this makes some sense - it's the best I can do at present

this is my opinion, I don't know if i'm right.

frats,
Rosco

Jeff - The NSW Club boys have all heard me rave about the fun at Forbes...

Rosco - that's how I read the chart too and yes i'd love to see the specs of the FX Brock 05.

regards
Stewart

yeah rosco your spot on peak horsepower is gained at high revs and peak torque at low revs and i must say that there is some serious torque there for a little petrol ive read quite a few of those charts on truck engines funny how so much truck stuff is the same as cars ,,,

just a idea on torque my truck which has a 400hp cummins diesel and is a 14.5 litre capacity turbo with arftercooler reaches 400hp at 2100 revs full noise and has a torque peak at 1250-1300 revs of around 1450 ft pounds so for a little old grey to get 600 ft pounds is a big effort but they where always a low rev moter which is always more fuel efficiant and reliable but not so quick of the mark, torque is what really what you look at to gauge power as a detroit diesel from the 70s and 80s which where two strokes turbo diesels could get 500hp but only 1000 -1200 ftpds of torque and you drove the ring out of them and they didnt pull as good as a 350hp cummins that achived 1250 ftpounds needless to say two stroke detroits are not made any more as four stroke get much better torque at low revs and torque is the inportant messure as its how much the crank can apply pressure to the driveline ,,,,,,sorry got rambling there

Rosco, you are right in the way you have interpreted the printout.
The result of the run looks as though it has been made in what they call Shootout mode and conducted in 2nd gear, thus attaining a much higher reading on the torque line. All true runs should be made in top gear or at least a 1-1 ratio for a more correct torque power reading to be taken. With all these figures taken into account you then have to work out Rolling wheel sizes and rear diff ratios to come out with the exact power figures. Now with all this bearing in mind max Horsepower or Kilowatts is acheived in any gear selected, so with Jeffs run his max power output was 76.5hp, this will be achieved in any gear 1st, 2nd or even 3rd just the result will be at a higher speed to get to the same rpm point, its just the torque has the biggest bearing on the numbers. Dyno reports and printouts are only as the good as the operater himself, and the end result is only what the customer wants to or expects to hear, and thats large numbers. Hope this makes sense to all.

Regards John

rosco wrote: Jeff - I have had a good look at your chart.

What diff ratio and wheels are you running - I can probably give you an approximate tacho readout at the respective speeds across the bottom scale...........

frats,
Rosco

Rosco, my car runs a standard grey motor diff center,
and the tyres at the time were 22" or 560mm Diameter.
I'd love to know the revs it was doing

retro wrote: jeff, how much was the dyno tune

The dyno tune was $200, which included removing the dizzy, recurving it, and replacement.

oldnek wrote: The result of the run looks as though it has been made in what they call Shootout mode and conducted in 2nd gear

I think from memory( which is a bit dodgy) it was done in second gear

Cheers
Jeff

yeah i mist that you need to be in a direct gear like oldnek said

Here is a link to Brockys FX http://uniquecars.carpoint.ninemsn.com. ... fault.aspx
SunnyTim I would love to here more about that engine especialy the piston mod

Does anyone know where in sydney we can get the old fb dynotuned, it needs a good tune and id rather take it all the way.

Hey Retro, You can come for cruise to bewdifal Ulladulla if you like, I can arrange to do it on a Saturday, if I haven't anything planned. Just give me a call at the shop.
02 44541425.

Regards John

me again fella's
I love this stuff - it's sort of new to me and I "need input"
thanks for your posts
John, yes - absolutely correct - depends on how I would expect the parameter to have been set, and the test equipment calibrated - I think that's
how we need to understand the outcome.............?
Jeff, will check my logbook, I know I spent ages with caculators and ratio's when working out best option for the red/4sp/and which diff centre.
I know I did a 3:89 on 13" inch with 175 tyres............
vaguley remember it valve bouncing once around 52 mph in 2nd (orignial standard grey - B210600 if anyone has it - I want it back! and will put it back in)
- I was a kid then..................

frats,
Rosco

stewart, page 101 of current street machine might give you some great ideas.

John, will have to do it in next few weeks, ill probally be up for a nice cruise to the coast, ill call you when im free. Thanks mate.