As some of you aware Mike sent us a head to do some testing and see what we can get out of it in the way of performance on the dyno and on the track.

As you can see from the dyno sheet comparing the RMW head and tune on Big Shows car and the Thumper head and Chris tune on 1320’s Mini, it stacks up pretty good.

We still need to do some more testing off combos as and when we can but we have achieved the following so far.

0-60 4.9 secs 25 x 9 slicks
0-100 11.7 secs 25 x 9 slicks
60-100 6.8 secs 25 x 9 slicks

Slicks Toyo 25 x 9 -15

60ft 2.0130
330ft 5.5212
660ft 8.5326 @ 82.23 mph
1000ft 11.0365
1320ft 13.3190 @ 101.82

21/03/2009 with 60hp Nitrous

60ft 1.8627
330ft 5.1536
660ft 7.8612 @ 91.96
1000ft 10.1004
1320ft 12.1412 @114.20

0-60 4.1
0-100 9.1
60-100 5.0
30-70 3.4

22/03/2009 with 80 shot and a better driver http://www.youtube.com/watch?v=xwbrJVhSl3E

60ft 1.7989
330ft 4.9212
660ft 7,5347 @ 95.23
1000ft 9.7272
1320ft 11.7193 @ 116.84

0-60 3.7
0-100 8.3
60-100 4.6

BFG Drag Radials 195 50 - 15

60ft 2.2677
330ft 5.9762
660ft 8.9608 @ 82.23
1000ft 11.4557
1320ft 13.6746 @ 105.1

Vehicle Spec

Weight 2596lbs incl driver
Pulley Alta 17% V2
Intercooler GRS TMIC
Manifold Janspeed
Cat Back Borla Cooper
Cam Newman
CAI JCW
Gearbox 06 with Quaife replaced with 02 Gearbox and Quaife on 21/03/2009
Clutch Exedy replaced with FX600 on 21/03/2009
Head Gasket BMW

Both the slicks and the drag radials are past they sell by date, also the track isn’t that great this time of year.

We’ll have some new slicks for the start of the Euro Sport Compact 1st round

We’ll keep this thread update through the year as we test and try new parts with the Thumper head.

Our next race date is 21st March 09 for testing without nitrous and then on the 22nd March is our 1st round of the Euro Sport Compact series where a small shot of nitrous will be activated.

 

haha

 

This thread will self destruct in 5, 4, 3, . . .

 

LOL... rocking!! ROFLMAO !!

Just me......................................

Thumper

 

Good Stuff Thumper saw the post on MT

 

 

A quick change in the contrast to make the lines a bit more visible. Might just be my screen, but I couldn't see the blue lines at all in the original.

 

Paul
Can you change the colors on the dyno chart. Very hard to read. My old eyes can't see them that well.

Thanks

 

To what do you attribute the difference in performance?

 

Thanks
Someone beat me to it.

 

Paul
Which Thumper head is it. Standard valve or big valve. Would like to know so we have the apples to apples comparison.

Thanks

 

Opps...

 

Thanks

 

LOOKY HERE

*thumper beat me

 

Great work
More torque and hp from 2500 to 6500 - the "sweet spot" oooohhhhh yeah! This is the "range" in which most people drive and hence more usable power than a BVH.
I have had a Thumper head for a while and I didn't need no dyno to tell me that they rock!
Mike has been saying this for a while that the smaller valve heads are great for daily driving ...well there is the proof

 

Thumper

2nd) TPR-2 Suggested Mods 17-19% pulley/ CAI/ exhaust / camshaft and a tune... we have that covered also.. Still not a full on Racer, however like to show the tail lights to others?? Great power mid to topend (where EVER that is...) Higher flowing larger stainless valves with the under cut stems for even more airflow, MPG isn’t your bother, being there first is!!
$1695.00 plus small core fee

So this head does have bigger vales - correct

 

YES.. the valve size is larger than stock size, however they are smaller than the full racing BVH ( TPR-3 ) . The Idea is to have a head to your Mods... not have to mod your car to the Head!! This way you can have the power where you use it... look at the dyno sheet!! Power and torque right where we use it. And still enough flow for more future mods. COOL!!

Of course the TPR-1 Head with the port and bowl work is fantastic for most of us with the basic CAI / 15% / and cat back!! Hope I helped.

Just me...........................

Thumper

 

Thanks for the reply. Just making sure I had my facts right. Are the valve springs and retainers an upgrade from stock to enable higher RPM use on the track or is that something that is only on the BVH.
Sorry for all the guestions. Just trying to compare my options. RMW, COSWORTH-M7 and yours.

 

Nice area under the curve, especially for a street MINI, but what about at higher revs? Would the Race head work better above 7k RPM?

 

The TPR-2 head hits 7500+ rpm with ease. IF you are making that kind of 8000+ rpm, then you would need to email me the profile on the camshaft.. the power rev range and the cam Lift. Then we can discuss the need that your engine requires and make the TPR-3 to your spec.

My experience has shown that the BIG heads are not the way to go on 90% of us , daily drivers!! If you are looking at 8000+ rpm, the you are in a class of your own!! yes?? The dyno sheet shows the power that can be gained with a smaller valved head. So if you dont go 8000+ then the TPR2 or even the TPR-1 Head would be a better performer for your application. The fun is in the drive!! Yes??

Hope this helps...
Just me....................................

Thumper

 

Go Go THUMPER!!!!!!

This is just to wet our appetites yes?

NOW FOR THE REAL TEST:

Thumper's TPR-3 BV Race Head VS RMW BV Jesus Head VS M7's Cosworth BV Head....

My Money's on Thumpers thou....and very soon..literally... ; )

 

Our Friends in the UK are taking stock springs to 7800 RPM without issue. We don’t see any value in running different springs in the TPR1 or TPR2. However if you want different springs we can build that for you too.

 

Good job Thumper and thanks for the testing Paul

 

If you're using the dyno to prove a point that it made more power, why wasn't it faster when you had slicks?

 

Less Top end power on the stocksized head....However, it gained more Low-mid range as what has been advertised