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Throttle bodies vs carbs
- Thread starter SeanDezart
- Start date
Grolls dont forget that when I said
Short length (15 mm) air horns available if there is little room
But of course your experts will know this .... wont they?
Anyhow why rely purely on your tuning house, wouldnt it be better if you actually knew the whys and wherefores rather than take their word for it.
Without the air horn the auxillary venturi may rattle giving varying air velocity as some models of DCOE weber needed the air horn to hold it in place.
Short length (15 mm) air horns available if there is little room
But of course your experts will know this .... wont they?
Anyhow why rely purely on your tuning house, wouldnt it be better if you actually knew the whys and wherefores rather than take their word for it.
grolls
Well-Known Forum User
SKiddell said:
Sorry but nope. I have in the past rebuilt 100's engines/gearboxes/diffs and done a many "mild tune". Getting the maximum out of an engine etc,is a specialist job and one that takes many a year of trial and error and as far as I am concerened this cant be bought or read on the net as the vast majority his either rubbish or hearsay.
As they say "the proof of the pudding is in the eating" Pound for pound I will be along way behind you, but distance wise not that far at the Pod
Good job its only 1/4 ,mile
DJZ 60
Well-Known Forum User
Very ,Very interesting.
I have personally felt that the L-series Engine,Has been deprived
of a better & more efficient Fuel calberation system. I have had Triples,
Twin S.u's of various sizes & type & have looked at fuel injection as well.
My Most ever experience of a decent & compatable system were
the 'Spike' tuned Triple 45 Dellortos & engine set up.
I regret selling,That car & feel that if the avenue,that is being
explored by Steve( ED) is a modern development of the triples ,than that
would be the 'dog's scollop's. I don't yet know How Sean & Status's car's
run after the Dave Jarman set up. The L-Series Engine However is capeable
of delivering awesome performance. DJZ 60.
I have personally felt that the L-series Engine,Has been deprived
of a better & more efficient Fuel calberation system. I have had Triples,
Twin S.u's of various sizes & type & have looked at fuel injection as well.
My Most ever experience of a decent & compatable system were
the 'Spike' tuned Triple 45 Dellortos & engine set up.
I regret selling,That car & feel that if the avenue,that is being
explored by Steve( ED) is a modern development of the triples ,than that
would be the 'dog's scollop's. I don't yet know How Sean & Status's car's
run after the Dave Jarman set up. The L-Series Engine However is capeable
of delivering awesome performance. DJZ 60.
SeanDezart
Well-Known Forum User
Grolls
"Yes we are, the persons i know have had incredible results (at the pod too) but admitadly mostly on 4 and 8 cylinder, but onions is onions mate" - WRONG, very wrong ! And you even stated why "Getting the maximum out of an engine etc,is a specialist job and one that takes many a year of trial and error" !!!
Why am I am not using the 40mm Solexs' ? Because I have 45mm Dellortos on my yellow Z ! See photo !
I'm folowing Skiddys' development very seriously as I think this is a great way to modernise the Z without losing any of the Z flavour !
"Yes we are, the persons i know have had incredible results (at the pod too) but admitadly mostly on 4 and 8 cylinder, but onions is onions mate" - WRONG, very wrong ! And you even stated why "Getting the maximum out of an engine etc,is a specialist job and one that takes many a year of trial and error" !!!
Why am I am not using the 40mm Solexs' ? Because I have 45mm Dellortos on my yellow Z ! See photo !
I'm folowing Skiddys' development very seriously as I think this is a great way to modernise the Z without losing any of the Z flavour !
Last edited by a moderator:
SeanDezart
Well-Known Forum User
Yes Grolls, but is it as efficient as Skiddys ? Mind you, one has to drive a lot of miles and be looking for every hp to pay the difference !
One thing puzzles me - why Skiddy didn't go for a 3 or 3.1ltr and put his TBs on that ?
One thing puzzles me - why Skiddy didn't go for a 3 or 3.1ltr and put his TBs on that ?
grolls
Well-Known Forum User
SeanDezart said:
Erm, £££££££. I'm sure skiddell will tell you that it wasn't just TB's. Power wise his motor is producing well but going to 3.1 would probably double what he has paid already and knowing what you have paid for you're 3.1 would you pay double? I would think not.
Everyone has to draw a line no matter who you are or what funds you have. I have now drawn mine.
I did try to find Albrechts post on the 1/4 mile times for some cars in Japan, wasn't some of those into the 10's and using carbs?
mikecart
Well-Known Forum User
Grolls,
Is this the thread you meant:
http://www.zclub.net/forum/showthread.php?t=5407&page=2&pp=15
?
Mike
Is this the thread you meant:
http://www.zclub.net/forum/showthread.php?t=5407&page=2&pp=15
?
Mike
grolls
Well-Known Forum User
I can't help thinking that there's a lot of as yet un-tapped potential in the UK cars when it comes to the quarter mile.......
How about 11.347 seconds, achieved back in 2000?
S30 body, 3.1 litre normal-aspiration, no computers, no carbon fibre: (original post by Albrecht)
yes this was the one, thanks Mike I searched for ages then gave up
How about 11.347 seconds, achieved back in 2000?
S30 body, 3.1 litre normal-aspiration, no computers, no carbon fibre: (original post by Albrecht)
yes this was the one, thanks Mike I searched for ages then gave up
SeanDezart
Well-Known Forum User
Skiddy wouldn't get double - he's getting 250 from a 2.8, I'm expecting something between 260 and 280 from the 3.1 on carbs !
But perhaps his engines' response time is going to be quicker and over a 1/4 mile, he'll probably have to change one less gear as well with the improved rev range he'll have !
But remember, I've decided upon a general purpose road car, not a 1/4 mile chaser !
Still, the Counts' post does give me some hope !!!
But perhaps his engines' response time is going to be quicker and over a 1/4 mile, he'll probably have to change one less gear as well with the improved rev range he'll have !
But remember, I've decided upon a general purpose road car, not a 1/4 mile chaser
!Still, the Counts' post does give me some hope !!!
SeanDezart
Well-Known Forum User
Not worth responding to ! But you know me.......I bet your specialist can get at least 350 bhp and 40 mpg too whilst doing 1/4 times of 9 secs whilst you have all the family in the car and a full picnic hamper !
In order to run 10's in a 1000 kilo car (a 240Z is supposed to be 1040 kilos dry, mine weighs around 1180 with me and half a tank of fuel) you would need in excess of 500 hp and there is no L6 anywhere in the world that makes that kind of power without forced induction, gas and warp drive, it just cant be done.
So what’s the trick? well its about changing one of the other variables (Weight, Power, traction, aerodynamics)
-- Weight, take a hundred kilos off and all of a sudden it becomes more attainable, according to my maths, taking a 100 kilos off would take 0.7 seconds of my time giving around 13 dead
--- Traction, use slicks (which if you look at the cars mentioned they are), this can make a huge difference, but here in the UK the drag challenge rules apply and I don’t run them. If I did then they would give me in the region of 0.2 of a second making my new time 12.8, hey presto were in the 12's and knocking on Phil Ellicott’s door.
Also take a look back at Sato Sans car (one of my favourites), its in the 12's oh by the way its on throttle bodies-- why? and making around 320 Hp, that’s around 70 Hp more than mine.
Its lightweight, running stickier tyres and 70 Hp up! so it should be in the 12's.
but if you look at the power curve, its all at the top end -- very little power below 4000, that’s not a criticism .. its just normal for a competition car of that nature and that is what those cars are -- competition cars!!!!!!
Mine is not a competition car so lets not compare apples with Aardvarks.
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?
I am confident that if I lost weight off both me and the car (interior stripped out, passenger seat out lightweight drivers seat, lightweight tailgate, swap the glass for lexan, no dash, fuel cell, etc etc and ran slicks, then a very low 13 or maybe a high 12 is possible, so all of a sudden we start looking competitive don’t we.
But neither do I want to do that to my car nor do I need to, what would be the point, if someone beats my time (which will happen) then I will modify her just enough to regain it and so on, still retaining much of the original characture and driving pleasure that the car offers.
