Post your dyno curve here
Discussion
ker Forgot to say. I will run smaller valves than stock wild cat. I will use 47.5mm/39mm valves. Is that an 1.87" and 1.53".
And i will not use std 3 angle valve seat. Well they could be machined R seat. But will modify them by hand..
One port is finished that can check is my rockers and studs and guideplates suitable my setup.
Also it is flow bench tested and flow over 100hp more than my home ported stage 4 specks head with 13mm lift.. The guy who make test. Say its good. No need any more porting. But i think i will make slightly more modification.
I hope to get near 500hp on street motor. If could get over 400hp on std rover casting and still daily driven.
Rover heads has got only too small port. Welding wont help a lot. Like those famous Vizard heads.. under 400hp on dyno last time when i see a dyno readings. Not sure is it 375hp? On 5.3litre engine?
And i will not use std 3 angle valve seat. Well they could be machined R seat. But will modify them by hand..
One port is finished that can check is my rockers and studs and guideplates suitable my setup.
Also it is flow bench tested and flow over 100hp more than my home ported stage 4 specks head with 13mm lift.. The guy who make test. Say its good. No need any more porting. But i think i will make slightly more modification.
I hope to get near 500hp on street motor. If could get over 400hp on std rover casting and still daily driven.
Rover heads has got only too small port. Welding wont help a lot. Like those famous Vizard heads.. under 400hp on dyno last time when i see a dyno readings. Not sure is it 375hp? On 5.3litre engine?
SILICONEKID 345HP 12.03 said:
Why don't the company making these wild cat heads change the design to fit the standard setup ?
Surely they will be opening up far more business .
If you want to use std parts. Go for TA heads. But like other forum. Ta heads need floor filling and porting roof up to get more flow..Surely they will be opening up far more business .
One think what acr can do to help us. Is to change bolt pattern to inlet manifold to suit std/eales DD manifold. But also waterways need to remove slightly up.. plus lot of more with the inlet track to get more power.
We finally managed to find some time to put the car back on the dyno on Friday and carry out some part throttle mapping. After a couple of hours we carried out some more power runs and got a bit more power, most likely due to the engine being a bit more run in. So now our little 4-litre is putting out over 380 bhp at the flywheel!
good development 
Planning on going to the Ultimate TVR shoot out at Santa Pod in August, so will be interesting to see how it performs on the drag strip. Although have done a fair few track days many years ago, never been on the drag strip so bit apprehensive about it.
Also planning on going to Neil Garner open day in September - they normally have a Dyno there (North London Dyno?) so will be interesting to see what it puts out on their dyno too...
Also planning on going to Neil Garner open day in September - they normally have a Dyno there (North London Dyno?) so will be interesting to see what it puts out on their dyno too...
drlloyd said:
Planning on going to the Ultimate TVR shoot out at Santa Pod in August, so will be interesting to see how it performs on the drag strip. Although have done a fair few track days many years ago, never been on the drag strip so bit apprehensive about it.
Also planning on going to Neil Garner open day in September - they normally have a Dyno there (North London Dyno?) so will be interesting to see what it puts out on their dyno too...
Looking forward to you guys coming along to the shootout. If you have any traction problems on the day I can lend you a pair of wheels with drag radials. They are a little close to the inner arches in some cases. If you have adjustable suspension then setting the rears stiff and maybe raising the ride height a little will help. With 380 at the fly and that torque curve I would guestimate a very low 12 at around 115+Also planning on going to Neil Garner open day in September - they normally have a Dyno there (North London Dyno?) so will be interesting to see what it puts out on their dyno too...
drlloyd said:
Planning on going to the Ultimate TVR shoot out at Santa Pod in August, so will be interesting to see how it performs on the drag strip. Although have done a fair few track days many years ago, never been on the drag strip so bit apprehensive about it.
Also planning on going to Neil Garner open day in September - they normally have a Dyno there (North London Dyno?) so will be interesting to see what it puts out on their dyno too...
Big respect. Also planning on going to Neil Garner open day in September - they normally have a Dyno there (North London Dyno?) so will be interesting to see what it puts out on their dyno too...
I can’t stand mods that are not put to the test with a timing device of some description.
High 11’s would be my guess if you can get that magic take off.
And yes it’s quite feasible to be steady off the line to protect stuff and work out what you could have done by Derek’s very accurate calculation of 0-60 ft times.
I estimate 118 mph over the line.
This will be a proper day of hard core racing by the sound of it.
DangerousDerek said:
Looking forward to you guys coming along to the shootout. If you have any traction problems on the day I can lend you a pair of wheels with drag radials. They are a little close to the inner arches in some cases. If you have adjustable suspension then setting the rears stiff and maybe raising the ride height a little will help. With 380 at the fly and that torque curve I would guestimate a very low 12 at around 115+
Thank you Derek, that is a very kind offer. Maybe traction from stand still won't be as much of a problem with our 4-litre as it is with the bigger engines? We tuned a TVR T350 a few years back with a 4.3 speed six engine - had phenomenol performance (about 415bhp at the wheels!) but less bottom end torque than even a standard 4-litre Rover V8 so it was easy to accelerate hard from stand still in the dry with minimum traction issues yet was one of the fastest accelerating cars I have ever driven with peak power at the redline of 7200rpm!
Classic Chim said:
Big respect.
I can’t stand mods that are not put to the test with a timing device of some description.
High 11’s would be my guess if you can get that magic take off.
And yes it’s quite feasible to be steady off the line to protect stuff and work out what you could have done by Derek’s very accurate calculation of 0-60 ft times.
I estimate 118 mph over the line.
This will be a proper day of hard core racing by the sound of it.
11's could be possible but it takes practice. Ask Peter how long it took him to get his 380 bhp Chim into the 11's. I can’t stand mods that are not put to the test with a timing device of some description.
High 11’s would be my guess if you can get that magic take off.
And yes it’s quite feasible to be steady off the line to protect stuff and work out what you could have done by Derek’s very accurate calculation of 0-60 ft times.
I estimate 118 mph over the line.
This will be a proper day of hard core racing by the sound of it.
DangerousDerek said:
11's could be possible but it takes practice. Ask Peter how long it took him to get his 380 bhp Chim into the 11's.
He kept that quiet I’m just trying to get the power boys worried so they turn up. And I need to add as much pressure as possible so they all screw it up and I hold my place on the leaderboard
Anyway you egged me in to what I now class a brill time and very proud of it. Top man
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