-
The Z Club relies on the support of it's paid members - join the club or renew your membership here.
Throttle bodies vs carbs
- Thread starter SeanDezart
- Start date
grolls
Well-Known Forum User
Russ said:Maybe a little, then he'd wake up from the horrible nightmare he was having and come back to reality
yes Russ, of the worst sort...lol
Still, my offer would still stand once my car is done, both cars on a local weighbridge, load up skidies motor with a big lump of weight (burns will do
) then off to the pod. to do some comparisons.
SeanDezart
Well-Known Forum User
I am having a hard time believing that Skiddys' car weighs so much with all the carbon fibre everywhere bonnet, roof, spolier etc !
Surely the way to go now is a lighter car with still more power - 3.1 and plastic body, windows etc !
Surely the way to go now is a lighter car with still more power - 3.1 and plastic body, windows etc !
Why would you have to go to that extreme?
If you know the weight of the car and its terminal speed or ET (elapsed time) on the 1/4 mile, you can calculate the Hp reasonably accurately, its called "physics".
That’s the beauty of the drag strip, its a real world dyno, and that’s what I have been trying to tell Sean.
So we weigh the cars, run them down the strip and calculate away, ending up with a final Hp figure -- good luck
Doing it any other way would end up me putting about 300 Lbs in my car -- just won’t work.
If you know the weight of the car and its terminal speed or ET (elapsed time) on the 1/4 mile, you can calculate the Hp reasonably accurately, its called "physics".
That’s the beauty of the drag strip, its a real world dyno, and that’s what I have been trying to tell Sean.
So we weigh the cars, run them down the strip and calculate away, ending up with a final Hp figure -- good luck
Doing it any other way would end up me putting about 300 Lbs in my car -- just won’t work.
DJZ 60
Well-Known Forum User
I suppose that all depends on criteria & catagory allowences as to how much
a car stray's from it's original specifications. I seem to recall,Mike mentioned
certain restrictions as per entry rules.
In itself meaning,possibly Sean's,or Groll's or Steve's car may not all
be in the same modification class.
That doe'snt mean that figure's can't be compared later however.
DJZ 60.
a car stray's from it's original specifications. I seem to recall,Mike mentioned
certain restrictions as per entry rules.
In itself meaning,possibly Sean's,or Groll's or Steve's car may not all
be in the same modification class.
That doe'snt mean that figure's can't be compared later however.
DJZ 60.
boomer
Well-Known Forum User
I am just here to stir the pot ya know...
what about those on your rodster, Sean ?
http://www.twminduction.com/ThrottleBody/ThrottleBody2900-FR.html
Style & brain
what about those on your rodster, Sean ?
http://www.twminduction.com/ThrottleBody/ThrottleBody2900-FR.html
Style & brain
SeanDezart
Well-Known Forum User
"its all at the top end -- very little power below 4000" - how can I put this - rollocks ?
The whole point about a 3.1 is that one has oodles of power at the bottom end and it keeps growing, matched with the right cam.and inner bitz (which I won't have), you could run 'til 8000 with it !
Still reckon your next step wehn you lose your record is to go up in cc !
1180 kgs ? Yeah, honestly I guess mine will be nearly the same but it would be nice to keep it to 1100 ! We'll find out when it's corner balanced !
Boomer old pal, yes,I was thinking of the rodster - the blue circuit beastie - if they are homologated, why not ? 1600cc with TBs ? 130bhp ?
The whole point about a 3.1 is that one has oodles of power at the bottom end and it keeps growing, matched with the right cam.and inner bitz (which I won't have), you could run 'til 8000 with it !
Still reckon your next step wehn you lose your record is to go up in cc !
1180 kgs ? Yeah, honestly I guess mine will be nearly the same but it would be nice to keep it to 1100 ! We'll find out when it's corner balanced !
Boomer old pal, yes,I was thinking of the rodster - the blue circuit beastie - if they are homologated, why not ? 1600cc with TBs ? 130bhp ?
Ian Patmore
Well-Known Forum User
Sean,
If the pic is of your engine in post 26, surely they are not Dellortos. They are Webers. They have the wing nut centre top access "panel" for some jets (see Skiddell's post 9) and the fuel delivery is on the right of the carb body. Dellortos have a "tower" in the centre (slightly towards the engine) top of the carb. a black plastic vent on the top and the fuel delivery is to the left of the carb. body. (Pic of Dellorto in my gallery).
Ian
If the pic is of your engine in post 26, surely they are not Dellortos. They are Webers. They have the wing nut centre top access "panel" for some jets (see Skiddell's post 9) and the fuel delivery is on the right of the carb body. Dellortos have a "tower" in the centre (slightly towards the engine) top of the carb. a black plastic vent on the top and the fuel delivery is to the left of the carb. body. (Pic of Dellorto in my gallery).
Ian
ben240z
Club Member
Use Ben Stapley’s car as an example, it is comparative to many of those quick cars from Japan in build and power, if Ben ever ran at the strip I am sure that he would produce a very very quick time (12's maybe even very high 11's) BUT it would not be accepted under the drag challenge rules as it is not road legal. Oh and by the way its running Injection not carbs -- why?
injection gives a much wider smoother powerband. The car can be driven slowly round the paddock or aggressively on the track with no choking up due to excessive fueling at lower revs but higher throttle openings. The engine pulls cleanly from idle and has useable power and torque from 1500 to 2000 rpm right through to 8000 rpm that we had it running to on the dyne(scary moments or what). I have to say that after running triple webers and spending a fortune having them set up teher is always a compromise, ie you either sacrifice bottom end drivability for top end power or vica versa. Throttle bodies/slide throttle and injection is a major step forward in the competition engine from a driving point of view. And I dont believe that you lose that glorious induction sound with throttle bodies/slide throttle.
Skiddy I am trying to get to santa pod this year but am dissappointed that I will not be able to run in the club challange.
injection gives a much wider smoother powerband. The car can be driven slowly round the paddock or aggressively on the track with no choking up due to excessive fueling at lower revs but higher throttle openings. The engine pulls cleanly from idle and has useable power and torque from 1500 to 2000 rpm right through to 8000 rpm that we had it running to on the dyne(scary moments or what). I have to say that after running triple webers and spending a fortune having them set up teher is always a compromise, ie you either sacrifice bottom end drivability for top end power or vica versa. Throttle bodies/slide throttle and injection is a major step forward in the competition engine from a driving point of view. And I dont believe that you lose that glorious induction sound with throttle bodies/slide throttle.
Skiddy I am trying to get to santa pod this year but am dissappointed that I will not be able to run in the club challange.
SeanDezart
Well-Known Forum User
Like these Ian ?
And not like these (see below) ?
?And not like these (see below) ?
Last edited by a moderator:
zedhead260
Well-Known Forum User
You can run - see the next mag (out soon) for details of new rules.ben240z said:
but you will have to join..........ooooop's, there I go again LOL
datsun dave
Club Member
ben its got to be worth 30 QUID mate just for the "Z Club window sticker"
SeanDezart
Well-Known Forum User
We'll see Ben, we'll see but remember that my car is a road car, hee, hee - like Skiddys and so there are obvious compromises - how much does yours' weigh ?
Grolls - you know those carbs !
Grolls - you know those carbs !
ben240z
Club Member
We'll see Ben, we'll see but remember that my car is a road car, hee, hee - like Skiddys and so there are obvious compromises - how much does yours' weigh
and unfortunately because it is a road car that makes the compromise worse. dont get me wrong you are going to end up with one heck of a smile driving it but as we are getting technical road cars have been developed to the spec that they are now in order to make them user friendly and that means smooth and even distribution of power. Why are all the big engined road cars injection now. Economy and user friendly. stick a big set of carbs on any new big engined road car and there will be outrage by the consumer about the flat spots or choking up at low revs and then taking off in a cloud of tyre smoke. As i said big smiles.
My car is around the 900kgs in present trim but still needs to go on a diet. just like me lol
and unfortunately because it is a road car that makes the compromise worse. dont get me wrong you are going to end up with one heck of a smile driving it but as we are getting technical road cars have been developed to the spec that they are now in order to make them user friendly and that means smooth and even distribution of power. Why are all the big engined road cars injection now. Economy and user friendly. stick a big set of carbs on any new big engined road car and there will be outrage by the consumer about the flat spots or choking up at low revs and then taking off in a cloud of tyre smoke. As i said big smiles.
My car is around the 900kgs in present trim but still needs to go on a diet. just like me lol