Working on the race car
- Thread starter sn31
- Start date
Ah, that's my pals at Withy then - pinching my colours as well!
Without giving his secrets away 'cos autograss manifolds are usually closely guarded secrets, it looks to be mostly an assembly of proprietary parts from Orchard Engineering who are specialists in this area.
If he took that set up off and fitted the standard MA12 carb and manifold (ugh!) he would instantly lose 25bhp.
bobsp16
Site Supporter
25 bhp up is good but its the £750 down is the bit i dont like....what figures in torque did you get on smc with that....???
people on here will think !christ! why does it have to be so far away....well for the road you dont need to be as long to acheve the same power but in autograss we need as much torque as we can find and this does help alot with that
people on here will think !christ! why does it have to be so far away....well for the road you dont need to be as long to acheve the same power but in autograss we need as much torque as we can find and this does help alot with that
bobsp16
Site Supporter
Ok,,he must of had a bad week if you only paid that for that,i no of some people that paid 650+ for them setups.......anyway i am not having ago..but you should be winning everything with 80+bhp,,,,,ive won most things with only about 74 bhp even my car has won the nationals (ladies)that is,,,,,,so you must be doing something wrong..lol
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sn31
Club Member (Trial)
Quite agree Bob ,had issues with air leaks after the roll at Map .even then Car can only be as good as the driver and that said i'm still getting me confidence back again after doing me arm ,so hopefully me and the car might have a good weekend .when i had it on the rollers at the beginning of the year it was a fresh engine build so not loosened up and knocked up 77bhp .just praying that another dizzy will make things right now as we isolated all electrics and found nothing ,this misfire has been around for 4-5 meetings now on and of .
In Autograss class 2 rule book, it allows the Cylinder head to be skimmed to 110.5 MM minimum thickness, then a three angle valve job, but no cutting of the valve throat, there s a figure of 30- MM dia .mentioned for the inlet throat. after that its all standard , Two Camshaft s are allowed T1 and T5 ,Choosing the the best head helps* , the inlet and exhaust manifold s are free as is the carburettor and air filter .
* Bob may share this information. (Y)
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sn31
Club Member (Trial)
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sn31
Club Member (Trial)
just like to add that although we run a 44mm carb the air fuel mixture does have to squeeze it's self through a 32mm restrictar plate
That arms a mess Chris but the outcome is better than anyone hoped at the time. I was the "director in charge" at the meeting and was on the scene quickly - met by a senior official telling me "his hands come off"!. Real mess and so pleased you've made such a rapid recovery.
My wife racing a class 8 single seater at the 91 Nationals did a similar thing only worse - arm out in a barrel roll down the track - still a mess today. She had muliple skin grafts, pins and plates, a month in hospital and a years physio! Following year when nearly recovered, went out in Dave Teryy's Class 2 and rolled it on the first lap! I was on commentary and for the first and last time ever I was speechless!
Window nets were all the rage then but NASA then, as now took the view that their responsibility was to recommend them not make them compulsory. They are good for some and not for others. Arm restraints are another option of course.
See you soon, Dave
My wife racing a class 8 single seater at the 91 Nationals did a similar thing only worse - arm out in a barrel roll down the track - still a mess today. She had muliple skin grafts, pins and plates, a month in hospital and a years physio! Following year when nearly recovered, went out in Dave Teryy's Class 2 and rolled it on the first lap! I was on commentary and for the first and last time ever I was speechless!
Window nets were all the rage then but NASA then, as now took the view that their responsibility was to recommend them not make them compulsory. They are good for some and not for others. Arm restraints are another option of course.
See you soon, Dave
oh god that arm 
i don't really know about auto grass rules but yeah as said window nets should be compulsory. i had a mate of mine roll his mk2 escort coming off a roundabout and the window went through and the exact same thing happend to him. also when my mate rolled my corolla his forearm bone thing came out of his elbow :doh: its not a nice thing to see but i can't imagine the pain. glad your mended tho mate.
i don't really know about auto grass rules but yeah as said window nets should be compulsory. i had a mate of mine roll his mk2 escort coming off a roundabout and the window went through and the exact same thing happend to him. also when my mate rolled my corolla his forearm bone thing came out of his elbow :doh: its not a nice thing to see but i can't imagine the pain. glad your mended tho mate.
