Not a very good result

**Al115** · Saturday 14th August 2010, 22:58

Yes, agree. And that's what I said in Post 2

**Rnash2002** · Saturday 14th August 2010, 23:32

Ok going to cover all bases and fit uprated fuel pump,fuel filter,fuel reg then get injectors cleaned.
Then will take to the rollers with a standard ecu aswell just incase its the map.
Lol not to much to do before pod but will try my best to sort it out,just seems strange to me that its running that lean as i would have thought a big bang would have happend with running at 2 different 1/4 miles and giving it a good blat on the roads every now and then.Maybe down to the solid internals or ive just been very lucky.

**smithy** · Sunday 15th August 2010, 00:06

try hlm for a power run hamish might be able to tell you why and give you an idea to sort it .just an idea mate

**Rnash2002** · Sunday 15th August 2010, 08:18

Originally Posted by smithy

try hlm for a power run hamish might be able to tell you why and give you an idea to sort it .just an idea mate

Would love to but would cost in fuel to get there as its not on the door step lol,gona just replace for peace of mind aswell,also if i do decided to keep her then will be good for me.
Has to one of them things,cant see it being the map.

**RT MECHANICS** · Sunday 15th August 2010, 08:49

The Walbro 255 is a very good upgrade the cars are getting old now and many cars we see are in need of a new one especially uprated cars they cost approx £85

Russ

**Rnash2002** · Sunday 15th August 2010, 12:44

Another quick question,if the car was running super lean wouldnt it put the engine light on?,i got the light come on after the rolling road for long term fuel trim at part load (231)
Just to add aswell,if i had a vac leak would that cause me to run lean?
Just thinking maybe they have pulled a pipe off my mistake and left it off while running her?

**Rnash2002** · Tuesday 17th August 2010, 11:01

Ok dyno sheet showing fuel and power.

**t5_monkey** · Tuesday 17th August 2010, 12:49

something doesn't look right - how come are you getting pretty much peak power at 4000rpm then flat-lining to 6000?

I would have thought with a KO24 you'd be looking at 300+ at the crank correctly set up.

<that's my dyno chart - power @ wheels, bit thin at the top end due to the small turbo but you can't argue with 100bhp low lag horses@the wheels at 2000 rpm for day to day driving >

Thought power curves were supposed to be a bit smoother like a mountain, I guess if you're just not getting enough fuel that would limit the power pretty comprehensively?

**Volvostorm** · Tuesday 17th August 2010, 19:17

I'm interested, as I'm using a similar set-up to yourself very soon. How much boost are you running? Your still on standard rods ain't ya? I know boost levels isn't everything, and hopefully you can see some better figures soon.

**Rnash2002** · Tuesday 17th August 2010, 20:17

Originally Posted by Pault5estate

I'm interested, as I'm using a similar set-up to yourself very soon. How much boost are you running? Your still on standard rods ain't ya? I know boost levels isn't everything, and hopefully you can see some better figures soon.

Well i think theres good power to be had from the turbo with the right fueling lol.
Heres the power sheet and boost.

As you can the red figure was with the boost turned down to 13psi not a bad result with the major lean fuel,so would say around 290 ish at 1 bar boost maybe.
And yes ive got a standard bottem end.

**Volvostorm** · Tuesday 17th August 2010, 20:33

Thats where mine and yours will differ, I've got rods and pistons to go in mine. I could run 1.5bar on mine (hopefully)

**p fandango** · Tuesday 17th August 2010, 21:17

Originally Posted by Pault5estate

Thats where mine and yours will differ, I've got rods and pistons to go in mine. I could run 1.5bar on mine (hopefully)

what pistons you using, i'm thinking of doing a 2.5 block when i get round to carrying the engine build on

**Jamest5r** · Tuesday 17th August 2010, 22:01

Originally Posted by Pault5estate

Thats where mine and yours will differ, I've got rods and pistons to go in mine. I could run 1.5bar on mine (hopefully)

What rods and pistons mate?? and how much if you dont mind me asking, ive been looking at RSI one's from the states, about $1200 without the import tax etc, which im worried about.

Cheers

**Volvostorm** · Tuesday 17th August 2010, 22:10

Originally Posted by jamest5r

What rods and pistons mate?? and how much if you dont mind me asking, ive been looking at RSI one's from the states, about $1200 without the import tax etc, which im worried about.

Cheers

I think my pistons are from RSi, and possibly the rods too, very well built. I didn't pay $1200, I got them off another forum for £500

Have you seen these on ebay? http://cgi.ebay.co.uk/Conrod-Volvo-8...es_CarParts_SM

**Jamest5r** · Thursday 19th August 2010, 00:40

Originally Posted by Pault5estate

I think my pistons are from RSi, and possibly the rods too, very well built. I didn't pay $1200, I got them off another forum for £500
Have you seen these on ebay? http://cgi.ebay.co.uk/Conrod-Volvo-8...es_CarParts_SM

Sorry for the delay in replying mate been working...tell me more about the above deal if you can, im not a computer buff and dont go on any other forums, prefer to stay on the dark side lol.

**smithy** · Thursday 19th August 2010, 14:15

Originally Posted by Rnash2002

Well i think theres good power to be had from the turbo with the right fueling lol.
Heres the power sheet and boost.

As you can the red figure was with the boost turned down to 13psi not a bad result with the major lean fuel,so would say around 290 ish at 1 bar boost maybe.
And yes ive got a standard bottem end.

something dont seem right with your graph if you was running 15.9 afrs on full boost your engine would of gone bang and also you would not have pulled a 14s quater.i would get it on another roller with a fuel pressure test done to check pressure whilst on boost.

**Rnash2002** · Thursday 19th August 2010, 15:03

Originally Posted by smithy

something dont seem right with your graph if you was running 15.9 afrs on full boost your engine would of gone bang and also you would not have pulled a 14s quater.i would get it on another roller with a fuel pressure test done to check pressure whilst on boost.

Might have been the maf playing up,also there boost reading was like 2 psi lower than my gauges.

**Volvostorm** · Thursday 19th August 2010, 21:34

Originally Posted by jamest5r

Sorry for the delay in replying mate been working...tell me more about the above deal if you can, im not a computer buff and dont go on any other forums, prefer to stay on the dark side lol.

Wasn't a deal mate, was just being sold, he only had the one set

**jimathan** · Thursday 19th August 2010, 23:41

Everyone overlooks the importance of the injectors. Its not just about the nozzles’ getting clogged up, as they get old the anvils get sticky and they cant respond fast enough at high rpm. This is one of the reasons for power curves flattening out at the top end.
Uping the fuel pressure or mapping for longer pulse width on the injectors wont help if they cant respond in time.