My Bhp Results At Sbc

[woodsy 0]

• 
  

Took my mi with 45's in today at SBC to get paul to set up carbs etc since i fitted new tappets and a catcam inlet cam.Basically

the carbs and timing where way way out and fuel was mostly coming out of back end. The car feels sooo much quicker now

its fantastic, tickover is bit lump but he thought in future a set of verniers and maybe getting slightly more ignition advance as my dizzy wont go anymore

would make drivability slightly better. Doesnt seem that much difference since i fiited the cam to be honest looking at figures, first figures below are standard cam

but run was done in 3rd gear and todays run was done in 4th gear as it was trying to wheelspin.THe figure before he tinkered are pretty bad arent they.

 

! !

Revs

Standard Cam 6000miles ago 3RD Gear

3000 BHP 72

3500 BHP 85

4000 BHP 100

5500 BHP 151

6000 BHP 162

6500 BHP 169

7000 BHP 170

 

Catcam Inlet Before Tinkering

 

3000 42

3500 49

4000 57

4500 64

5000 72

5500 79

6000 87

6500 94

7000 102

 

After Setting Carbs etc in 4th Gear!

 

 

3000 67

3500 78

4000 101

4500 116

5000 139

5500 156

6000 165

6500 170

7000 173

 

 

If anyone can change these to a graph it would be great Thanks.

Edited July 21, 2009 by woodsy

[welshpug 1,661]

no figures for 7500?

[woodsy 0]

no figures for 7500?

 

No he didnt write any down for that RPM, maybe he didnt take it over that.I know people say there RR is a

bit optimistic but the car has only ever been on there one so least gave me an idea.

[welshpug 1,661]

I wouldn't be worried about the actual figures, how does it drive?

[woodsy 0]

I wouldn't be worried about the actual figures, how does it drive?

It drives like a different carcompared to what its been like last few weeks.It just wants to rev like mad when you floor it.Sounds

like a nascar when revs get above 5500rpm thanks to carbs.

I took it up other week but my crank bolt slankened off resulting in lack of oil so just fitted new bigends and crank bolt

and just been taking it easy for few miles but was such a pain to drive as HC and COs where off the scale.Paul said HC are

still a touch high but thats down to the cam, wouldnt mind its only a stage one from QEP.Wonder what theyre more aggressive ones

are like.

[woodsy 0]

• 
  

Took my mi with 45's in today at SBC to get paul to set up carbs etc since i fitted new tappets and a catcam inlet cam.Basically

the carbs and timing where way way out and fuel was mostly coming out of back end. The car feels sooo much quicker now

its fantastic, tickover is bit lump but he thought in future a set of verniers and maybe getting slightly more ignition advance as my dizzy wont go anymore

would make drivability slightly better. Doesnt seem that much difference since i fiited the cam to be honest looking at figures, first figures below are standard cam

but run was done in 3rd gear and todays run was done in 4th gear as it was trying to wheelspin.THe figure before he tinkered are pretty bad arent they.

 

! !

Revs

Standard Cam 6000miles ago 3RD Gear

3000 BHP 72

3500 BHP 85

4000 BHP 100

5500 BHP 151

6000 BHP 162

6500 BHP 169

7000 BHP 170

 

Catcam Inlet Before Tinkering

 

3000 42

3500 49

4000 57

4500 64

5000 72

5500 79

6000 87

6500 94

7000 102

 

After Setting Carbs etc in 4th Gear!

 

 

3000 67

3500 78

4000 101

4500 116

5000 139

5500 156

6000 165

6500 170

7000 173

 

 

If anyone can change these to a graph it would be great Thanks.

Forgot to say 15% needs to be added to get flywheel BHP.

[dcc 855]

these ATW figures then?

 

Very respectable figures.

[large 33]

More or less 200bhp then .

You have to be happy with that.

[sideways danny 0]

not bad at all!!

 

Difference between previous run and run before setup can be mostly explained by doing the earlier run in 3rd. It should always be done in 4th. A gearbox is a torque multiplier, 4th is 1:1 (or very close) is most cases. Running in 3rd will always without fail give a higher figure