ok,i'll admit i know...

keef · 22-03-2007, 07:21 PM

f--k all really,not silly, had and owned 14 v8's in the past.but i read some reasonably good build sheets[especially late model stuff]that when it came down to dyno sheets ect. were actually surprisingly low. was i always living in adreamworld[probably so]or were the manual supplied figures [haynes ect.] amplified some what?

AU2PWR · 22-03-2007, 07:28 PM

err.. What ?

jarridtheruler · 22-03-2007, 07:32 PM

Yeah, i don't know what thats all about buddy.

Ruger · 22-03-2007, 07:33 PM

I think he's saying he has had motors build using spec sheets as referance and was supposed to get a certain horsepower with those combos but they were lies on the dynos.

My advice - dynos are only good for tuning mate.

Walkinshaw · 22-03-2007, 07:34 PM

Yeah im ****ed about the price of wheet per tonne as well

robjh80 · 22-03-2007, 07:35 PM

I think he's saying that V8 motor output figures are somewhat "exagerated" in manuals and sales brochures etc as to what the "real" output is............."but I could be wrong?"

damon90 · 22-03-2007, 07:35 PM

:nutsycuck :nutsycuck :nutsycuck :nutsycuck

GXL078 · 22-03-2007, 07:37 PM

Dynos measure rear wheel power output, manual quote flywheel, could that be the difference?

Sourbastard · 22-03-2007, 08:01 PM

makes just as much sense

banarcus · 22-03-2007, 08:09 PM

Perhaps it was just some drunken riddle or something thought of during a psychosis?

keef · 22-03-2007, 08:42 PM

damn, seems i am posing a bit of a riddle.[not intended].i understand an auto looses approx 20%,manual maybe 5 to 10%,but according to my old manual, a bog stock 351c made 250hp,that would be approx 200kw[in early seventy's].just trying to get an honest 250hp on a dyno sheet doesn't seem that easy, from what i've been reading here. unless your gonna spend 7g+.

keef · 22-03-2007, 08:50 PM

Quote:

Originally Posted by AU2PWR

**removed**

f--ck i'm over this whole lick my d--k cause it's bigger than yours ****!i might be a bit slow on computers,i might not know as much as you,just thought i would offer a topic for discussion,seems i got a response,must be good to know everything, eh? :the_finge

Dezza · 22-03-2007, 08:52 PM

Um, could you please repeat the part about the things? You know, the things!

keef · 22-03-2007, 08:54 PM

Quote:

Originally Posted by Ruger

I think he's saying he has had motors build using spec sheets as referance and was supposed to get a certain horsepower with those combos but they were lies on the dynos.

My advice - dynos are only good for tuning mate.

that's where i was heading,cheers,seen a lot of guys spending a fair bit of cash ,only to be getting maybe 180-200 on the dyno

Ruger · 22-03-2007, 10:30 PM

Quote:

Originally Posted by keef

damn, seems i am posing a bit of a riddle.[not intended].i understand an auto looses approx 20%,manual maybe 5 to 10%,but according to my old manual, a bog stock 351c made 250hp,that would be approx 200kw[in early seventy's].just trying to get an honest 250hp on a dyno sheet doesn't seem that easy, from what i've been reading here. unless your gonna spend 7g+.

What driveline is behind the motor mate?
my brothers clevo made 540 horse on an engine dyno and 410 on the chassis dyno at the nats. thats through a 9" and a c4 with 8" race converter.

Cant really predict drivetrain loss with a % and factor in you get some happy dyno's spitting out thousands of free horse and hungry dynos that wont give you ****.

Casper · 22-03-2007, 10:35 PM

Guys, want to settle down and give this bloke a chance?

Keef, can you please clarify what you are trying to get at? Not really sure what you are trying to state.

Daniel, if you post up that "You're a tool" picture one more time I'm going to let my pet ban dragon chew on you for 72 hours.. understand? Unwarrented abuse will NOT be tolerated.

Ruger · 22-03-2007, 10:38 PM

Quote:

Originally Posted by Casper

Guys, want to settle down and give this bloke a chance?

Keef, can you please clarify what you are trying to get at? Not really sure what you are trying to state.

Daniel, if you post up that "You're a tool" picture one more time I'm going to let my pet ban dragon chew on you for 72 hours.. understand? Unwarrented abuse will NOT be tolerated.

All he is asking is why its so hard to get 200 horse at the wheels out of a clevo without having to fork out 7 grand and why are they making so little if they are quoted 250 horse from factory.

I put it down to age of the motor and driveline loss. still dont know what driveline he's running though

I agree though give him a break he has an honest question not the easiest to understand but its an honest question and he's asking for help.

GXL078 · 23-03-2007, 11:13 AM

Quote:

Originally Posted by keef

damn, seems i am posing a bit of a riddle.[not intended].i understand an auto looses approx 20%,manual maybe 5 to 10%,but according to my old manual, a bog stock 351c made 250hp,that would be approx 200kw[in early seventy's].just trying to get an honest 250hp on a dyno sheet doesn't seem that easy, from what i've been reading here. unless your gonna spend 7g+.

I spent about that much and got 270? So?

Road Games · 24-03-2007, 04:11 PM

G. DAY mate, had s solid cam motor runnin 11s-BUT ran 13.5s at105mph with hyd cam/ 4.5 gears 2500 stall std heads/ 750dp/ interfirence extractors/ dual point dizzy/gt40 coil/ holley red pump/ std fuel line/3" aircleaner/1600kgs race ready- STREET trim, doesnt take much-must run premium (comp10.3 av)say goodbye HSV & most turbo xr6s... He he he

: from original cost got 227hp at the wheels- which i think equalld 270 moroso shifted hp- anyone prove me wrong???cam cost $200/ holley $700/exhaust$1000?/fuel-pump $200 fitted/90/10 shocks-120??? stall converter $500+/diff gears $500+/ blowin HSVs away, PRICELESS....

GXL078 · 24-03-2007, 04:31 PM

Quote:

Originally Posted by DAZZLER351

G. DAY mate, had s solid cam motor runnin 11s-BUT ran 13.5s at105mph with hyd cam/ 4.5 gears 2500 stall std heads/ 750dp/ interfirence extractors/ dual point dizzy/gt40 coil/ holley red pump/ std fuel line/3" aircleaner/1600kgs race ready- STREET trim, doesnt take much-must run premium (comp10.3 av)say goodbye HSV & most turbo xr6s... He he he

: from original cost got 227hp at the wheels- which i think equalld 270 moroso shifted hp- anyone prove me wrong???cam cost $200/ holley $700/exhaust$1000?/fuel-pump $200 fitted/90/10 shocks-120??? stall converter $500+/diff gears $500+/ blowin HSVs away, PRICELESS....

What? You reckon you beat an XR6 Turbo with your 227RWHP? Your dreamin. You paid $700 bucks for a Holley?

**Fordman1** · 24-03-2007, 04:36 PM

Quote:

Originally Posted by DAZZLER351

G. DAY mate, had s solid cam motor runnin 11s-BUT ran 13.5s at105mph with hyd cam/ 4.5 gears 2500 stall std heads/ 750dp/ interfirence extractors/ dual point dizzy/gt40 coil/ holley red pump/ std fuel line/3" aircleaner/1600kgs race ready- STREET trim, doesnt take much-must run premium (comp10.3 av)say goodbye HSV & most turbo xr6s... He he he

: from original cost got 227hp at the wheels- which i think equalld 270 moroso shifted hp- anyone prove me wrong???cam cost $200/ holley $700/exhaust$1000?/fuel-pump $200 fitted/90/10 shocks-120??? stall converter $500+/diff gears $500+/ blowin HSVs away, PRICELESS....

What was that ??

Casper · 24-03-2007, 04:37 PM

Quote:

Originally Posted by xcgxl

What? You reckon you beat an XR6 Turbo with your 227RWHP? Your dreamin. You paid $700 bucks for a Holley?

227rwhp in a well set up 1600kg car will run damn close to 13.5 ET, the numbers add up.
A stock BA XR6T will NOT run a 13.5 so yes, it is certainly very possible. Just a simple matter of numbers. Sometimes setup, driveline and light weight can overcome brute power far more effectively than people think.

normxb · 24-03-2007, 04:43 PM

The mechanic that used to work with me when I first got my racecar always quoted " Cubic Dollars make Cubic H/P " but when you get to a certain stage "Cubic Dollars X 2 make Cubic H/P".

Roughly translated "Spend $5,000 to get 250 H/P , Spend 50% more $ to get 5-10% more H/P" . It's like a Sliding Scale .

(Hope you can understand where I'm coming from)

Norm

Casper · 24-03-2007, 04:47 PM

Quote:

Originally Posted by normxb

The mechanic that used to work with me when I first got my racecar always quoted " Cubic Dollars make Cubic H/P " but when you get to a certain stage "Cubic Dollars X 2 make Cubic H/P".

Roughly translated "Spend $5,000 to get 250 H/P , Spend 50% more $ to get 5-10% more H/P" . It's like a Sliding Scale .

(Hope you can understand where I'm coming from)

Norm

Yep, its a principle of diminishing returns.
Its like climbing Mt Everest. Its pretty certain that the first 500m's up is going to be a lot easier than the last 500m's up. You've only traveled 500m both times but those last 500m probably took 100x more time and 100x more effort. Same as chasing power. The first 50rwkw increase is going to be a lot easier and cheaper than the last 50rwkw increase.