And so it begins....................
Discussion
I had a good result at Surrey RR yesterday, 356 bhp, 390 torques and perfect fueling.
Interesting as this engine was built about 7 years ago, (even though it has done only 3K) as to how it compares with a similar 5.5 engine built at about the same time for a griff owner, Topsparks I believe.
I found his graph a few months ago.
You may have seen Ians, (RoseyTVR) graph built for usability but again not dissimilar but approaching the concept from another angle, (throttlebodies). Was it a 5.4?
I got to say, Ian TBs look the business and win the pub pin up!
Interesting as this engine was built about 7 years ago, (even though it has done only 3K) as to how it compares with a similar 5.5 engine built at about the same time for a griff owner, Topsparks I believe.
I found his graph a few months ago.
You may have seen Ians, (RoseyTVR) graph built for usability but again not dissimilar but approaching the concept from another angle, (throttlebodies). Was it a 5.4?
I got to say, Ian TBs look the business and win the pub pin up!
, you're not wrong there!Could post my last dyno for comparison if anyone's interested 
I have the reverse of most of you guys, more bhp than torque, (all down to the cam) and the torque is very progressive, you all have much higher low rpm torque figures than I have... probably a good thing for me, I've got quite a heavy right foot
Everyone seems to have more torque than horsepower, am I the only one with more horsepower than torque??
I have the reverse of most of you guys, more bhp than torque, (all down to the cam) and the torque is very progressive, you all have much higher low rpm torque figures than I have... probably a good thing for me, I've got quite a heavy right foot Everyone seems to have more torque than horsepower, am I the only one with more horsepower than torque??
Chilliman said:
Could post my last dyno for comparison if anyone's interested I have the reverse of most of you guys, more bhp than torque, (all down to the cam) and the torque is very progressive, you all have much higher low rpm torque figures than I have... probably a good thing for me, I've got quite a heavy right foot
Everyone seems to have more torque than horsepower, am I the only one with more horsepower than torque??
Probably got something to do with living in Norfolk - I just haven't worked out what yet. I have the reverse of most of you guys, more bhp than torque, (all down to the cam) and the torque is very progressive, you all have much higher low rpm torque figures than I have... probably a good thing for me, I've got quite a heavy right foot Everyone seems to have more torque than horsepower, am I the only one with more horsepower than torque??
Chilliman said:
Could post my last dyno for comparison if anyone's interested I have the reverse of most of you guys, more bhp than torque, (all down to the cam) and the torque is very progressive, you all have much higher low rpm torque figures than I have... probably a good thing for me, I've got quite a heavy right foot
Everyone seems to have more torque than horsepower, am I the only one with more horsepower than torque??
Go on then, lets have a look. I have the reverse of most of you guys, more bhp than torque, (all down to the cam) and the torque is very progressive, you all have much higher low rpm torque figures than I have... probably a good thing for me, I've got quite a heavy right foot Everyone seems to have more torque than horsepower, am I the only one with more horsepower than torque??
Don't think the figures are printed on this readout, but was just over 360bhp and about 355torques... as mentioned earlier, most RV8's seem to run higher torque than bhp... If I keep the revs through the gears between 3.5 and 6k it's quite quick, but I dont have that low down huge torque that you guys have.......
Interesting graphs Richard.
At 6K we're developing about the same torque and power.
Cam wise yours is developing more torque as the power rises, generally speaking.
Mine has more midrange, possibly due to a milder cam.
What heads have you?
Can't remember my cam, H404 or H414? H404 I reckon .....
Rob.
Soooooo, ours should be fairly equal at speed on the track.
At 6K we're developing about the same torque and power.
Cam wise yours is developing more torque as the power rises, generally speaking.
Mine has more midrange, possibly due to a milder cam.
What heads have you?
Can't remember my cam, H404 or H414? H404 I reckon
..... Rob.Soooooo, ours should be fairly equal at speed on the track.
phazed said:
Interesting graphs Richard.
At 6K we're developing about the same torque and power.
Cam wise yours is developing more torque as the power rises, generally speaking.
Mine has more midrange, possibly due to a milder cam.
What heads have you?
Can't remember my cam, H404 or H414? H404 I reckon ..... Rob.
Soooooo, ours should be fairly equal at speed on the track.
Peter, they're my original TVR 500 heads, ported to V8Dev stage 4 spec, plus bulleted guides and 3 angle valve seats At 6K we're developing about the same torque and power.
Cam wise yours is developing more torque as the power rises, generally speaking.
Mine has more midrange, possibly due to a milder cam.
What heads have you?
Can't remember my cam, H404 or H414? H404 I reckon
..... Rob.Soooooo, ours should be fairly equal at speed on the track.
As for being fairly equal at speed on track, I suspect your greater torque and superior driving skills will have something to say about that
Chilliman said:
phazed said:
Interesting graphs Richard.
At 6K we're developing about the same torque and power.
Cam wise yours is developing more torque as the power rises, generally speaking.
Mine has more midrange, possibly due to a milder cam.
What heads have you?
Can't remember my cam, H404 or H414? H404 I reckon ..... Rob.
Soooooo, ours should be fairly equal at speed on the track.
Peter, they're my original TVR 500 heads, ported to V8Dev stage 4 spec, plus bulleted guides and 3 angle valve seats At 6K we're developing about the same torque and power.
Cam wise yours is developing more torque as the power rises, generally speaking.
Mine has more midrange, possibly due to a milder cam.
What heads have you?
Can't remember my cam, H404 or H414? H404 I reckon
..... Rob.Soooooo, ours should be fairly equal at speed on the track.
As for being fairly equal at speed on track, I suspect your greater torque and superior driving skills will have something to say about that
................. not sure wheel spats will be that accommodating to be honest though Peter 
Gassing Station | Chimaera | Top of Page | What's New | My Stuff