QLD Fastest Black Cobra

[750hp]

I see the new VF Holden has gone away from hydraulics and has an electric power steering system.

[sideshow]

I have wired up afew astra electric pumps lately and even a bmw mini elect pump into a new Subaru imprezza so many cars run them these days
wonder if the vf comm pump runs thru canbus might have to see how to get workshop manual for the new comm

[Rebel1]

oops, just looked in your gallery.
Those Factory Five units I doubt will do the job.

[Aussie Mike]

Hi Rotax98

Is that a HQ Holden front end on your chassis? If so you might want to talk to McDonald bros racing in thomastown VIC. They make tubular arms for that front end.

Lindsay gets on here sometimes and has built a Cobra for him self and worked on a few others.

Regards

[spookypt]

Rotax if you have no luck and do facebook you may be able to get in touch with him there.

If you go to https://www.facebook.com/QLDCobraClub and then look at comments adjacent to the 2 days of thunder pics...

Quote:
Post by Mark Crespan:
"did any one see that cobra mongrel at lakeside it quick?"

Response by Marl Crespan:
"yes i did very fast car. one of the fast cars ther"

You shouldn't have any trouble finding him.

[FUNFER2]

Anyone know what transmission is used in that Cobra video ?

[750hp]

Originally Posted by FUNFER2

Anyone know what transmission is used in that Cobra video ?

He's using the 6 speed sequential Holinger: Holinger H6S

I don't believe the car yet has a strain gauge fitted, so while it's a clutchless upshift Grant is still lifting off for each gearchange.

I ran into Mark at a car show months ago. The car wasn't there for me to look at, but he said fitting the Holinger required significant work to the RMC chassis. They're an odd shaped trans, but what an incredible bit of gear!

[spookypt]

Craig, any ideas of rough cost?

I'd love one. But 20k is a g50 and 427 for the 40.

[spookypt]

Hollinger at a guess.

[Aussie Mike]

Certainly sounds like a Holinger. They have a distinctive whine with the straight cut gears.

Cheers

[spookypt]

A long shot could be a Jerico with a Renagate Sequential shifter RENAGATE

Straight cut gears but the throw on the renegate so long compared to Hollinger boxes its unlikely. My thing wines like there's no oil in it!

A jerico on what seems like a hill climb/gymkhana car could be handful...

I'd really love to see Mark and his car out with the QLD Racer guys..... new crew are always welcome.....and it'd be nice to see how it goes roundy roundy for 8 laps...

Perhaps considering all the youtube footage its not been built for that kind of fun and its moreso a weapon for what you see on youtube. It sure sounds stout!

[BITTEN]

Thanks guys. Ours is a Crown front cross member (for now, for rego purposes-one day) customised to suit the coil over Penske shocks and Rays wheels. We originally modified the Crown upper arms which technically worked except that we had nil camber and it floated down the straight like a bowl of porridge.

We might look at making a jig for the current custom A Arms the modify then with 40mm offset vs the current 60mm offset and all should be good. The reason why I liked Marks suspension guys electric steering unit as it has an on dash control to adjust the steering weight which would make life easier given we have a manual rack. It also is a steering quickener if I recall which would again be beneficial.

[Rebel1]

Rotax, I can confirm the electronic steering in Marks car came from the company I linked to earlier in the thread.

[Rebel1]

He is a short you tube from Sunday last:
Mongrel Cobra at Lakeside - YouTube

That fella in the passenger seat sure slowed it up

[750hp]

Les, have you driven in a car with an M22 Muncie trans? The old M22 Rock-Crusher was known for their gear whine, so I'm keen to hear your thoughts on how much louder the Holinger is when you're just driving normally.

[BITTEN]

Thanks everyone for your help. Mark emailed me the details and it was Ultimate Power Steering. The smallest unit is the used on this years British Touring Cars and costs $12,000 however they range from $1300 up. $12,000 allows you to preset via laptop how much steering weight you want for each part of the track when it is used with Motec track mapping.
I have also added a few new pics of our "BITTEN" Cobra for anyone interested.
We've just had the engine out to advance the cam a few degrees and tweak a few house keeping bits like stopping our feet for spontaneously combusting with a bit of carbon fibre on the footwells and heat insulation matting.
Next job is to add a relay to the starter. Those of you who were at the nationals may remember we had an oil leak issue (now rectified) which leaked onto the clutch and we couldn't get it started on the Sunday. Turns out we were just tooth to tooth on the starter/flywheel cogs. Even with experts all around us, none of us thought to rock the car in gear which would have solved it. Its funny how sometimes you look for the complicated answers to simple problems.

[spookypt]

All good. Big coin!

There's an unanswered question in my last pm to you as well!

[BITTEN]

Sambo - youre on the money. We will redo the A Arms ourselves.

Mark Crespan just rang me and he was very helpful. Mongrel is a 302 and hes got top quality parts which is obviously part of the reason he is so quick. It's great that most people are prepared to help others when asked. Its also interesting to hear others thoughts behind why they built their car in that manner and for what purpose. Mark obviously enjoys the challenge of hill climbing as well as circuit racing. It sounds like an awesome piece of machinery and he has my respect.
check out this photo of him airborne.
Mark Crespan Photo by simple113 | Photobucket

[750hp]

Is that you Grant, you stirrer?!? I don't think anyone would disagree that Mark's car is a well sorted car with some hardcore bits all over it. I'm like others who would be interested to see how it compares to other Cobras that run some pretty good times up at QR and Morgan Park.

You know that my car was good in a straight line and had a bit of power, but I didn't have the suspension design, parts, set-up or talent to compete with other Cobras at full length racetracks. As such, I'm just interested to see how Mark's car would compare to one or two regularly driven fast street Cobras at QR.

Do you still have that monster turbocharged Falconer Chev?

[Mr Go Fast]

[quote=750hp;1252535]Is that you Grant, you stirrer?!? I don't think anyone would disagree that Mark's car is a well sorted car with some hardcore bits all over it..

Hey Craig, Couldn't help it , there is so much dribble posted on these sites.
If some one doesn't know the facts they just make it up !. At least some one got close with the comment about a Supercar engine ,thing is a real good combo now , enough said.
The Cobbie was never Green , had a green radiator mouth at one point. Never was Supercharged and anint a Nascar engine just good old Aussie beef.
Marks Cob at Bathurst was some thing to see and hear coming up the mountain!!!. Old Toyo Gear-sack let it down on that occasion , problem solved now. Pretty stout jigger for a street driven toy.
We shared the drive at Oakey and M ran 6 th and I ran 7 th outright against all the single seaters etc.
Yes still got the 1000 or so neds locked up in the V6 , maybe i should line the shop Ute up with a few of u boys. Draught horses not Shetlands.
Ive got a 4 cyl jigger that does 53 s at the Lake and 9s on the 1/4
Drag racers don't have a lot of imagination either corners arn't in the plan. Thats what i love about road racing , brakes , suspension , aerodynamics and the power comes last .
Power cruise should be a blast this time around !. Maybe we can see a few more Cobbies there .
Any way back to the real world , there's work to do. Have a good day.[ love a good stir ].xxx