Missing Horses..........

[NITROX]

Hi All,
Today the truck has been for its remap at RS,
got it loaded onto dyno and computor plugged in, 1st question,
is it 98 or 125HP?
'dont know, but never pulled like 125 so maybe 98?'

Dyno test produced 86HP!!!!!!!!!!!!!!!!!

WTF!!!!!!!!!!!!!!!!!!!

bit of messing and several tweeks on remap and it now has 110 at rear wheels, 175 at flywheel.

so where are the rest hiding?
does any one know which engine is 98hp?
Mines an R20.

one other thing was noted, intercooler got hot and that was with their bloody big fan running, and i mean bloody hot, so that needs checking now, to see if any restrictions in it,

its much better though now, feels and drives tons better.

but where are my missing horses???????????

They also didnt like K&N filter kit,
said original much better as pulls cold air from outside engine bay and not sucking warm air, can see their point on that one.

Answers on a postcard please............

 

[lacroupade]

Hi All,
Today the truck has been for its remap at RS,
got it loaded onto dyno and computor plugged in, 1st question,
is it 98 or 125HP?
'dont know, but never pulled like 125 so maybe 98?'

Dyno test produced 86HP!!!!!!!!!!!!!!!!!

WTF!!!!!!!!!!!!!!!!!!!

bit of messing and several tweeks on remap and it now has 110 at rear wheels, 175 at flywheel.

so where are the rest hiding?
does any one know which engine is 98hp?
Mines an R20.

one other thing was noted, intercooler got hot and that was with their bloody big fan running, and i mean bloody hot, so that needs checking now, to see if any restrictions in it,

its much better though now, feels and drives tons better.

but where are my missing horses???????????

They also didnt like K&N filter kit,
said original much better as pulls cold air from outside engine bay and not sucking warm air, can see their point on that one.

Answers on a postcard please............

If its got an intercooler it should have 125bhp. But maybe thats fictitious at the wheels?

As for the hot air K&N thing, load of borrox. At 10mph perhaps but not at speed. Its a 4x4 not a bloody Nissan GTR :lol And the original has a bottleneck that the cone removes so WTF do they know.

and 175 at the flywheel sounds a bit ambitious but hey ho, if they say so....

 

[lacroupade]

PS - the non-TDi is about 100bhp and the 3.0 litre is about 150.

 

[Thomas-the-Terrano2]

TDi for intercooler bonnet scoop on 2.7 from twin headlight facelift ie mk 2 t2/r20
1996 onwards.

no scoopy no intercooly.

 

[NITROX]

its def intercooly :lol

so cool some of blumming horses ran away to warmer climes.................. :doh

 

[Thomas-the-Terrano2]

ok trawled yer posts you said previously was a 2003,
so defo scoop(o) 125 bhp and 1 donkey?

thing is on a rolling road no air jamming into intercooler
what ever rpm, so wonder if at disadvantage, Or will seem
faster on road with ram air effect.

having admired my intercooler wiht plastic shroud off i do
wonder if they do less than more good. flow comes up off
turbo, 3 right hand bend thru cooler than 3 mor 90 degree
twists into inlet. could delete i/c and with one 180 corner
go straight out of turbo into inlet manifold distance inches
rather than couple of foot via i/c.

 

[brynjdavies]

Every lost horse is heating up the cogbox diff wheel bearings at a rate of 745 Watts per horse, so you should drive a vehicle before putting it on a dyno to get oils up to temperature. They measure the lost horse by running the vehicle up to max speed top gear and then power off and dip the clutch, they then measure how quickly the wheels slow down due to friction, the quicker the more loss, and then do an up calculation of what power is produced as engine shaft horse power, a bit of hit and miss I reckon as it depends on the mass of the rotating parts, heavy parts keep rotating longer for the same friction. Did you dyno it before the modification as the power loss should be the same before and after
Bryn

 

[NITROX]

ive scanned printout but cant upload it as too big!

it was 86hp with only mod being K&N filter.
110.9 after remapping.

 

[jace]

my truck has no intercooler being from warmer climes it wasnt worth fitting aparently,not having it aparently gives less restrictive air flow meaning sharper response,its certainly better than the 2.7tdi ir replaced no lag just whoosh bang gone!

 

[Thomas-the-Terrano2]

still thats an increase of 25 isnt it where ever its measured its quite an improvement.

a 29% increase. reckon it must be at wheel.

so if applied to mythical 125, it would be a gain of 36.3 so upto 161.3 , ?

which is fractionally more than what the stock zd 3.0 puts outs.

can they work out the torque figures.

what was the cost please, just to compare with the various add on boxes.

 

[Timbo_1975]

Firstly with i/c you should have 125bhp at the CRANK to start with, BUT this is not including all ancillary's and we all know that big fan pulls alot of BHP.

It's also next to impossible to get enough cold air flow through a top mount i/c on a dyno for it to be fully effective, so you will loose quite abit of power through high charge temps.

The stock snorkel is restrictive, but it is preferable to a naked K&N drawing hot air.

Did they Check boost pressure and adjust it? And do you have any black smoke at all?

I would disregard 175bhp, as the stock pump is maxed out at about 165 on a good day, and if you give i full available fuelling in the mid-range the standard clutch will slip!

 

[Thomas-the-Terrano2]

my truck has no intercooler being from warmer climes it wasnt worth fitting aparently,not having it aparently gives less restrictive air flow meaning sharper response,its certainly better than the 2.7tdi ir replaced no lag just whoosh bang gone!

but doesnt an i/c well cool, so in that case less need here than in a hot climate where
the intake cooled by ram air thru i/c increases burn.

dunno but cant help thinking all my pipework cancels itself out.

note many coolers on front mounted presume more effective than bonnet scoop though
does make it look aggressive!

 

[Thomas-the-Terrano2]

one for timbo!

is a hp = to a bhp.

whats the difference and why the two terms/measures.

i note the yanks generally refer to hp, bhp european?

 

[jace]

im toying about bunging uk bonnet on for looks(ive dented mine with bumper!),and fitting front intercooler,there was a troll on ebay just other day with front cooler

 

[(RIP) PLANK]

mine is a TDI and it goes like Sh*t off a shiny shovel, i wouldn't even think of a remap or power box, there doesn't;t seem any point :nenau

I tow thing right up to it's limit no problems, and it surprises boy racers off the lights :thumb2

 

[Thomas-the-Terrano2]

mine is a TDI and it goes like Sh*t off a shiny shovel, i wouldn't even think of a remap or power box, there doesn't;t seem any point :nenau

I tow thing right up to it's limit no problems, and it surprises boy racers off the lights :thumb2

like wise, the zd is really an incedible bit of kit, feels like lot more than 3 litres to drag
2 and a half of troll round, let alone another upto 3500 on towbar.

thats why i ask about torque increase, after all its torque that turns wheels, tows etc.
sure its said the bhp is a by product of torque?, but always a petrol/diesel head like to
know of easy reliable power, providing doesnt shorten life of parts.

 

[NITROX]

Firstly with i/c you should have 125bhp at the CRANK to start with, BUT this is not including all ancillary's and we all know that big fan pulls alot of BHP.

It's also next to impossible to get enough cold air flow through a top mount i/c on a dyno for it to be fully effective, so you will loose quite abit of power through high charge temps.

The stock snorkel is restrictive, but it is preferable to a naked K&N drawing hot air.

Did they Check boost pressure and adjust it? And do you have any black smoke at all?

I would disregard 175bhp, as the stock pump is maxed out at about 165 on a good day, and if you give i full available fuelling in the mid-range the standard clutch will slip!

everything was checked, no smoke at all,
looking at printouts it lts about 178hp at flywheel and 110.9 at wheels.
Gained about 70ft/lbs torque at flywheel too.
I'm chuffed to bits with results, total different truck to drive, was just curious as to where the missing horses where on 1st run, but if measured
at crank then they'd bolted before i got there :thumb2

cost was £414.

expensive but they did 3 remaps till they where happy and
every one was tried out on dyno.

 

[(RIP) PLANK]

i would love to compare this to mine now and see how much improvement against a standard one there is :thumb2

 

[Thomas-the-Terrano2]

guess at wheels is more relevant than fly wheel, though this is where is normally
quoted and drooled over.

175, vs 161 from using same percentage gain to compare shows i guess that more
is lost down the drive train. think you said they up calculate fly wheel so approx
at best.

still when you think the td to tdi is 26 bhp again at fly wheel in theory on a perfect
factory demo machine. the remap has lifted again. it s impressive.

so whats the insurance company say, guess they'll prefer a remap and print outs
to a bolt on box, or is it no evidence been mapped....

 

[makeitfit]

It's worth taking off the I/C and clean it out., as it's bound to have a nice layer of oil residue in it:doh It gets there from the oil blow by thingy and so "insulates" the i/c instead of conducting heat out
Then you can stick a fan on it and even water spray the bugger :naughty
That'll get a few of those ponies back:thumbs
Next is to bin the viscous fan jobbie as Timbo says