Rolling road results 297.5 BHP

[Meatball]

Ive noticed theres not been much power/pub talk on the chim forum for sometime. So after a tune up and power run at Dulfords TVR today i thought id share my latest rolling road results with you all.

I did get a run of 311 BHP but we only got it once (fluke i guess)

My scanners gone AWOL so im gonna be a nerd and my results.

1997 Chimaera 450BV 59,000 miles

BHP

3.5 @ 1500 rpm
59.8 @ 2000 rpm
103.0 @ 2500 rpm
140.8 @ 3000 rpm
170.9 @ 3500 rpm
205.6 @ 4000 rpm
242.0 @ 4500 rpm
271.9 @ 5000 rpm
292.1 @ 5500 rpm
297.5 @ 6000 rpm (Rev limiter kicked in just before 300)

Torque

12.3 @ 1500 rpm
156.5 @ 2000 rpm
216.4 @ 2500 rpm
246.5 @ 3000 rpm
256.4 @ 3500 rpm
270.0 @ 4000 rpm
282.4 @ 4500 rpm
285.6 @ 5000 rpm
278.9 @ 5500 rpm
260.5 @ 6000 rpm

Big thanks to Richard and the team at Dulfords TVR for their help.

Edited by Meatball on Saturday 29th September 21:22

[SimonV8ster]

What spec is your engine ?? I assume you must have done somework on it ??

[That Daddy]

What a crap power output....................NOT,well done thats nice power for one of these cars

[Meatball]

That Daddy said:

What a crap power output....................NOT,well done thats nice power for one of these cars

Mr Daddy you say the nicest things

[That Daddy]

Meatball said:

That Daddy said:

What a crap power output....................NOT,well done thats nice power for one of these cars

Mr Daddy you say the nicest things

[HarryW]

Very nice, is it a 'proper' 450BV i.e. the very rare one which I thought was about 10 early Griffs only .

I know the RV8 is known for its grunt but compare it to a healthy Cerb 4.5 lump, same capacity, plenty of grunt and revs to be had, just to start the AJP/RV8 debate off .


BHP CHIM 450 --- CERB 450

3.5 @ 1500 rpm --- 40
59.8 @ 2000 rpm ---- 97
103.0 @ 2500 rpm --- 160
140.8 @ 3000 rpm --- 185
170.9 @ 3500 rpm --- 240
205.6 @ 4000 rpm --- 282
242.0 @ 4500 rpm --- 330
271.9 @ 5000 rpm --- 365
292.1 @ 5500 rpm --- 410
297.5 @ 6000 rpm --- 430

Torque

12.3 @ 1500 rpm --- 130
156.5 @ 2000 rpm --- 240
216.4 @ 2500 rpm --- 338
246.5 @ 3000 rpm --- 330
256.4 @ 3500 rpm --- 360
270.0 @ 4000 rpm --- 375
282.4 @ 4500 rpm --- 382
285.6 @ 5000 rpm --- 385
278.9 @ 5500 rpm --- 390
260.5 @ 6000 rpm --- 378

[Meatball]

HarryW said:

Very nice, is it a 'proper' 450BV i.e. the very rare one which I thought was about 10 early Griffs only .

I know the RV8 is known for its grunt but compare it to a healthy Cerb 4.5 lump, same capacity, plenty of grunt and revs to be had, just to start the AJP/RV8 debate off .


BHP CHIM 450 --- CERB 450

3.5 @ 1500 rpm --- 40
59.8 @ 2000 rpm ---- 97
103.0 @ 2500 rpm --- 160
140.8 @ 3000 rpm --- 185
170.9 @ 3500 rpm --- 240
205.6 @ 4000 rpm --- 282
242.0 @ 4500 rpm --- 330
271.9 @ 5000 rpm --- 365
292.1 @ 5500 rpm --- 410
297.5 @ 6000 rpm --- 430

Torque

12.3 @ 1500 rpm --- 130
156.5 @ 2000 rpm --- 240
216.4 @ 2500 rpm --- 338
246.5 @ 3000 rpm --- 330
256.4 @ 3500 rpm --- 360
270.0 @ 4000 rpm --- 375
282.4 @ 4500 rpm --- 382
285.6 @ 5000 rpm --- 385
278.9 @ 5500 rpm --- 390
260.5 @ 6000 rpm --- 378

Harry i dont understand your comparison....My engine is based on an old landrover or is it lawnmower and yours is a specialist racing engine.....anyway i can take my roof off

[HarryW]

Meatball said:

Harry i dont understand your comparison....My engine is based on an old landrover or is it lawnmower and yours is a specialist racing engine.....anyway i can take my roof off

Just a bit of fun, 4.5ltrs Vs 4.5ltrs thats all.
Agree taking the roof off is one reason I'll never close the door on going back to a rag top Tiv.

[Fire99]

Sounds good figures indeed..

so dish the dirt.. what spec is your engine? Have you invested in any well chosen mods?

[Altrezia]

Sounds great! Mine is a 430 BV, and has been RR'd at 274.1bhp / 300+lbft

[Meatball]

Fire99 said:

Sounds good figures indeed..

so dish the dirt.. what spec is your engine? Have you invested in any well chosen mods?

Ive been tryng this little mod out

My new AFM is a straight through AFM using the lucas set up. It seems to work well combined with a hotter cam (stealth in my case), an increase in fuel pressure and re chip. Im now getting peak power at 6000 rpm upto to the limiter kicking in. So ive asked the guy who designed this mod to program me a chip that will allow the rev limiter to cut in at 6500 rpm.

Ive got before and after print outs i`ll stick them on when i get access to my work scanner.

[Meatball]

Altrezia said:

Sounds great! Mine is a 430 BV, and has been RR'd at 274.1bhp / 300+lbft

Good numbers what Mods have you done?

[Altrezia]

Not sure really. I know it's had fresh cams, and its the big valve version of the 430, but apart from that, who knows.

Here's the graph.

[Meatball]

Altrezia said:

Not sure really. I know it's had fresh cams, and its the big valve version of the 430, but apart from that, who knows.

Here's the graph.

Monster Torque for a 430
Ive scanned mine here goes.....

Edited by Meatball on Tuesday 2nd October 20:23

Edited by Meatball on Tuesday 2nd October 20:28

[s5tuart]

My 500 gets 296 BHP @4500rpm and 397 Torques @3000rpm.
Helped by a Tornado chip, K&N filter and ACT smooth bore air induction kit. All measured at the flywheel. At the wheels it shows 245 BHP @ 4500 rpm and 305 Torques at between 3500 & 4000 revs.
What's the difference between the Chim and the Cerb engines please?

[Meatball]

s5tuart said:

My 500 gets 296 BHP @4500rpm and 397 Torques @3000rpm.
Helped by a Tornado chip, K&N filter and ACT smooth bore air induction kit. All measured at the flywheel. At the wheels it shows 245 BHP @ 4500 rpm and 305 Torques at between 3500 & 4000 revs.
What's the difference between the Chim and the Cerb engines please?

Nice numbers, the difference between cerb and chim engine is about a third more power
so they keep telling me