Mythbusters.
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- Wheel Whore
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Re: Mythbusters.
i agree and disagree wit the boost pipe and cooler theory coz u need to fill a grater area up meaning ur turbo will work harder to fill it on the start of + boost coz u now filling a (eg 2l drum wit a 50mm pipe now wit the same 50mm pipe u filling a 6l drum 6l will take 3x longer so in 2 secs u will fill that same 2l drum wit 2l of air but the 6l drum still hase 4l to go yes it was 50% full to start coz it needed air to breath but it was at -2 vac so yes and no for me
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- Wheel Whore
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Re: Mythbusters.
has not hase
- Abnormal
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Re: Mythbusters.
while you are at it you should check outjason gunn wrote:has not hase
wit
coz
u
ur
ps there is an edit button.
\Oo) \ _w_ / (oO/
- Jetta2
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Re: Mythbusters.
Not even Dr Sheldon Cooper can understand what you wrote there dudejason gunn wrote:i agree and disagree wit the boost pipe and cooler theory coz u need to fill a grater area up meaning ur turbo will work harder to fill it on the start of + boost coz u now filling a (eg 2l drum wit a 50mm pipe now wit the same 50mm pipe u filling a 6l drum 6l will take 3x longer so in 2 secs u will fill that same 2l drum wit 2l of air but the 6l drum still hase 4l to go yes it was 50% full to start coz it needed air to breath but it was at -2 vac so yes and no for me
Ryan Demoser
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- Captain
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Re: Mythbusters.
Jetta2 wrote:Not even Dr Sheldon Cooper can understand what you wrote there dudejason gunn wrote:i agree and disagree wit the boost pipe and cooler theory coz u need to fill a grater area up meaning ur turbo will work harder to fill it on the start of + boost coz u now filling a (eg 2l drum wit a 50mm pipe now wit the same 50mm pipe u filling a 6l drum 6l will take 3x longer so in 2 secs u will fill that same 2l drum wit 2l of air but the 6l drum still hase 4l to go yes it was 50% full to start coz it needed air to breath but it was at -2 vac so yes and no for me
your 6l drum is already full you must just replace it, thats what the turbo does the moment it start moving
- Chadilax
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Re: Mythbusters.
Hi Guys would just like to introduce myself as I am new here and to say wow this is a great thread, learnt so much!
Thanks guys!
Chad
Thanks guys!
Chad
By chadilax at 2012-01-06
VW Polo 1.4 8v '04
White color coded
17" Rims + K&N Cone Filter
Jbl Splits all round and Pioneer Sub
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- Lieutenant
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Re: Mythbusters.
Dear Panic,
A mechanic once told me that the timing on my vr is out and that it should be set.
I then told him that i was under the impression that the Mgmt does it by itself and that the knock sensors play its part there.
He looked at me funny.
Is this true?
A mechanic once told me that the timing on my vr is out and that it should be set.
I then told him that i was under the impression that the Mgmt does it by itself and that the knock sensors play its part there.
He looked at me funny.
Is this true?
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Re: Mythbusters.
"Engine mods and software will make a car more fuel efficient"
:tosser:
:tosser:
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Re: Mythbusters.
well in some setups and circumstances it canBalls wrote:"Engine mods and software will make a car more fuel efficient"
:tosser:
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- Jetta2
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Re: Mythbusters.
My Jetta uses less fuel when cruising and daily use with a 2.0 turbo motor than it did with the original 1600 carb motor.Stu wrote:well in some setups and circumstances it canBalls wrote:"Engine mods and software will make a car more fuel efficient"
:tosser:
And there are tons of guys who have done mods and software to all sorts of cars and get better fuel consumption when driving decently than when the cars were stock.
Granted, when you put foot, that fuel consumption goes straight out the nearest window.
Ryan Demoser
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- VWicked
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Re: Mythbusters.
I got one. So i saw Dirty Harry's post about fuel consumption etc and I agree and posted there as well that small motors in heavy bodies give k@k consumption BUT,
Lets compare his mk3 GS 1.6 which is around 10l/100km to a Ford Bantam 1.3. So i owned that GS for a bit before Harry got it so I remember that its weight is around 1050kg's. Now this Bantam as per the disc is 1000kg and is 1.3. We have been using it for the past two weeks in commute from Midrand to JHB CBD in traffic etc and we have been getting 6.5l/100km and that driving it as we please!
So question is small engine heavyish body? Why the difference apart from the capacity? Would a mk3 GS be lighter on fuel if it had a 1.3 say?
I get the whole 2.0 has more power and so on and how that would be lighter but why is the 1.6 motor sitting out like a sore thumb?
Lets compare his mk3 GS 1.6 which is around 10l/100km to a Ford Bantam 1.3. So i owned that GS for a bit before Harry got it so I remember that its weight is around 1050kg's. Now this Bantam as per the disc is 1000kg and is 1.3. We have been using it for the past two weeks in commute from Midrand to JHB CBD in traffic etc and we have been getting 6.5l/100km and that driving it as we please!
So question is small engine heavyish body? Why the difference apart from the capacity? Would a mk3 GS be lighter on fuel if it had a 1.3 say?
I get the whole 2.0 has more power and so on and how that would be lighter but why is the 1.6 motor sitting out like a sore thumb?
Have you had your bottle of Hatorade today?
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- PoLonY
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Re: Mythbusters.
bantam 1.3 is rated at 55kw...doesn't take a lot of fuel to make that power
My bantam i got 700km off a 55l tank regardless of load, revs etc
My bantam i got 700km off a 55l tank regardless of load, revs etc
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Re: Mythbusters.
1.6 golf carb is 60kw right?
Have you had your bottle of Hatorade today?
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Re: Mythbusters.
without the bolt on cone filter...VWicked wrote:1.6 golf carb is 60kw right?
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Re: Mythbusters.
Back in the day when my golfie was still a stock 1.3.carp (ja die een wat jy in die dam vang!) me and a friend both took on a long distance trip, she was driving in a stock 1.6i life, we were following each other and cruising at 160ave, that meaning my poor car was redlining in 4th gear nearly all the way to keep up, while she was cruising quite comfortably in 5th gear. I used about 1/3 more fuel for the trip.
When i first got the 2l it was fitted with a fully worked head, didn't have the cam yet so i couldn't wait and fitted a stock cam for time being, did some highway driving then, got caught in a heavy rainstorm and was forced to slow down to like 80-100km/h, got something ridiculous close to 15km/l, the i was still running carburetor on the 2l, would have been even better if i had Fuel Injection fitted then. Now consumption with cam and a heavy foot is like 5km/l on a good day. Car is now only mapped on Wide Open Throttle so even if i drive nicely it hardly makes any difference to fuel consumption.
When i first got the 2l it was fitted with a fully worked head, didn't have the cam yet so i couldn't wait and fitted a stock cam for time being, did some highway driving then, got caught in a heavy rainstorm and was forced to slow down to like 80-100km/h, got something ridiculous close to 15km/l, the i was still running carburetor on the 2l, would have been even better if i had Fuel Injection fitted then. Now consumption with cam and a heavy foot is like 5km/l on a good day. Car is now only mapped on Wide Open Throttle so even if i drive nicely it hardly makes any difference to fuel consumption.
2.0i ADY. 90.2kW & 198.1Nm atw excl. 50Horses VAT 13.9980sec @ OKH nationals 7/4/2012
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Re: Mythbusters.
Nice forum. Im new to this. looks like im on the right track of getting some info
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Re: Mythbusters.
Welcome, glad you enjoyed this thread, it should save you some good money on paying school fees to learn what works and whats a myth...Troy wrote:Nice forum. Im new to this. looks like im on the right track of getting some info
Have you had your bottle of Hatorade today?
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- Scatman
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Re: Mythbusters.
Hi and welcome to the forum!Troy wrote:Nice forum. Im new to this. looks like im on the right track of getting some info
Please feel free to test any of the theories you may have heard regarding cars here, that way we all can learn more about cars in general. I hope you enjoy your stay here!
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- Cadet
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Re: Mythbusters.
I have one... adding an intercooler to a turbo diesel setup will decrease the intake temps and increase power and torque,
would this however reduce the EGT temperatures or because more power is produced will it run hotter with the intercooler?
Panic should know this one. It's a Land Cruiser 80 vx TD thing
would this however reduce the EGT temperatures or because more power is produced will it run hotter with the intercooler?
Panic should know this one. It's a Land Cruiser 80 vx TD thing
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- BIGMIG
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Re: Mythbusters.
Did it not come with an intercooler from the factory?nacho! wrote:I have one... adding an intercooler to a turbo diesel setup will decrease the intake temps and increase power and torque,
would this however reduce the EGT temperatures or because more power is produced will it run hotter with the intercooler?
Panic should know this one. It's a Land Cruiser 80 vx TD thing
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Re: Mythbusters.
I think the EGT's would remain basically the same, as it is a component of the amount of diesel you inject into the engine. The more diesel you throw into the engine the hotter it runs, and the leaner the mixture, the cooler it runs. I doubt the power gains from the intercooler would be negated by the (possibly) increased EGT's.nacho! wrote:I have one... adding an intercooler to a turbo diesel setup will decrease the intake temps and increase power and torque,
would this however reduce the EGT temperatures or because more power is produced will it run hotter with the intercooler?
Panic should know this one. It's a Land Cruiser 80 vx TD thing
Let's hear what the other guys have to say.
I also have a myth:
"Doing a burnout (warming the tyres) just before a 400m sprint with normal street tyres won't help increase traction"
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- Cadet
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Re: Mythbusters.
Nope, AFAIK none of the 80 VX Turo Diesel models had one standard. Only after 1997BIGMIG wrote:Did it not come with an intercooler from the factory?nacho! wrote:I have one... adding an intercooler to a turbo diesel setup will decrease the intake temps and increase power and torque,
would this however reduce the EGT temperatures or because more power is produced will it run hotter with the intercooler?
Panic should know this one. It's a Land Cruiser 80 vx TD thing
So I guess if one only adds an intercooler ( without tuning the fuel pump), the EGTs would run cooler. Thus one can increase boost!
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Mythbusters.
interesting facts:
Depending on the build, bigger is almost never better so rule of thumb is always use the smallest turbo that is capable to accomplish the biggest task if you understand what I mean.
The right size turbo in its comfort zone it always outperform a bigger turbo, in a uncomfort zone
Depending on the build, bigger is almost never better so rule of thumb is always use the smallest turbo that is capable to accomplish the biggest task if you understand what I mean.
The right size turbo in its comfort zone it always outperform a bigger turbo, in a uncomfort zone
- 1.8iblackie
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Re: Mythbusters.
this is very true. my previous turbo had a t60-1 compressor wheel and it worked fine but because the wheel is made to flow a mother load more than i was using i was running it in a very un efficient part of the compressor map and that meant alot of heat in charge air.vwpro wrote:interesting facts:
Depending on the build, bigger is almost never better so rule of thumb is always use the smallest turbo that is capable to accomplish the biggest task if you understand what I mean.
The right size turbo in its comfort zone it always outperform a bigger turbo, in a uncomfort zone
8vT 187.2kW and 361Nm
- JETTA 1
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Re: Mythbusters.
Geeez, never to old to learn. Thank's PM, learned a lot from all the myth's.
Then Slakkie, thank's for the link. Very help full and educational.
slakkie wrote:I agree on point 8... See this post... http://www.enginesforsale.co.za/?p=49BlueBlob wrote:Here's 4 more:
7) Big intercoolers or long boost pipes give more lag. Crap.
the whole 8V makes more torque than 16V thing. Crap.
9) You can raise the octane of your fuel significantly by adding 7ml of some liquid. Crap.
10) Boost puts more strain on engines. Crap.
edit: Nice thread, by the way.
And look at the dyno sheet.
Then Slakkie, thank's for the link. Very help full and educational.