Forum: Accelerating
09-05-2020, 01:10 PM
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Replies: 0
Views: 798
81 mm Big Bore W11 engine. (R52-R53)
As we continue having fun with the W11 R53 MCS, We have been approached numerous times on ENGINE BUILDS. So we decided to make a 'big bore' engine. (1.8 Ltr engine)
81 mm bore ( vs the 77 mm stock)...
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Forum: Accelerating
07-01-2019, 12:18 PM
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Replies: 7
Views: 2,084
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Forum: Accelerating
04-14-2019, 01:31 PM
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Replies: 7
Views: 2,084
LOL... lets bring them back !
Thumper...
LOL... lets bring them back !
Thumper Performance has R50 stuff. KEEP your stock camshaft and advance the cam phase with our ACG !
More power and better mileage !
We do have camshafts that...
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Forum: Accelerating
04-06-2019, 03:59 PM
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Replies: 7
Views: 2,084
Camshaft..
We have new bolt in Cams for the r50-52-53 ! more power than the good old Schrick! more low end ! No Exhaust tube ding, we have two the TPR401 ( .401" lift ) and the TPR405 ( .405" Lift). these...
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Forum: Maintenance, Problems, and Repairs
09-27-2017, 02:08 PM
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Replies: 0
Views: 1,364
Boring the cylinders .. HOW LARGE ??
I saw an add for a "big Bore" kit for the r53 engine. WE have always been told the max over bore is .5mm !! Remember ? ANY gear head knows that 95% of the engine block out there can always take a...
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Forum: The Parts Bin
11-30-2016, 01:44 PM
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Replies: 1
Views: 1,848
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Forum: The Parts Bin
11-24-2016, 06:01 PM
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Replies: 1
Views: 2,294
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Forum: The Parts Bin
11-24-2016, 05:52 PM
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Replies: 1
Views: 1,848
Camshaft. Heavy Street r53
DONE !! Thumper Performance has a NEW camshaft out for the crazy Street Guys..
Got mods ?? gonna need them for this high lift big duration Camshaft!
We set about 5 years ago working on...
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Forum: Accelerating
10-26-2016, 04:00 PM
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Replies: 0
Views: 2,411
NEW Competition Camshaft
Thumper Performance Competition Camshaft !
.423-258*/ .338-218* HR 8000 Rev asphalt Ripping
(10.74mm / 9.85mm)
We have a great Full on STREET/TRACK Grind Camshaft !!
The Design is made for...
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Forum: Accelerating
10-13-2016, 04:25 PM
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Replies: 1
Views: 2,062
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Forum: Accelerating
10-06-2016, 10:10 PM
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Replies: 1
Views: 2,062
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Forum: Accelerating
07-02-2016, 01:37 PM
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Replies: 0
Views: 2,238
Facebook stuff
Yo... OK check out my facebook page !! Thumper Performance ! It has some stuff and also I hope, has some info on how to go faster.. !! cool??
Happy Fourth Everyone !! And US Vets.. We all did...
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Forum: The Parts Bin
03-17-2016, 03:26 PM
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Replies: 1
Views: 2,294
Bee-hive Performance Valve spring kit
http://i261.photobucket.com/albums/ii41/Thumper460/Ports%20vs%20stock%20016.jpg (http://s261.photobucket.com/user/Thumper460/media/Ports%20vs%20stock%20016.jpg.html)
Thumper Performance
...
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Forum: Maintenance, Problems, and Repairs
03-12-2016, 03:55 PM
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Replies: 1
Views: 2,367
Bad ASS Performance Camshaft for the modified...
Bad ASS Performance Camshaft for the modified MINI r53
Racing is a demanding sport !! Power and torque curves are all important !! Bearing longivity at high RPM is critle, Choosing a camshaft...
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Forum: Maintenance, Problems, and Repairs
03-10-2016, 08:29 PM
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Replies: 1
Views: 2,367
Damn... More Camshaft stuff !!
Pre-load on the Hyd Lifter !!
Lifter Pre-loading
Setting Hydraulic Lifter Pre-load (Non-Adjustable Valve Train)
COMP Cams® recommends ensure the proper pre-load.
" Hydraulic lifters...
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Forum: Accelerating
02-10-2016, 01:31 PM
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Replies: 9
Views: 3,659
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Forum: Accelerating
02-06-2016, 01:51 PM
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Replies: 9
Views: 3,659
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Forum: Accelerating
02-05-2016, 07:35 PM
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Replies: 9
Views: 3,659
http://www.thumperheads.com
TPR2 Ported...
http://www.thumperheads.com
TPR2 Ported Head... only 1695.00 / Free shipping to ya in the US.
+.5mm intake stainless steel Valve / 1.5mm Exhaust (Inconel) stainless steel Valves with black...
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Forum: Accelerating
11-26-2015, 02:33 PM
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Replies: 9
Views: 3,659
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Forum: Accelerating
11-25-2015, 02:20 PM
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Replies: 9
Views: 3,659
Testing.. always working for more !!!
Testing... Testing... modifying.. Porting.. testing...
http://i261.photobucket.com/albums/ii41/Thumper460/Big%20Port%20%20%20%20%20BP%20Heads/A1%20Flow%20bwnch.jpg...
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Forum: Accelerating
02-23-2015, 04:40 PM
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Replies: 4
Views: 4,392
Up Date....
Yikes.. been a while on this subject.. Here are some guys just like you and me and their results.. Cool??
................
I'm out in the garage this morning working on the car, and I...
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Forum: Accelerating
11-18-2012, 12:14 AM
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Replies: 14
Views: 2,398
Did you ever get the head fixed?? When you...
Did you ever get the head fixed?? When you jumped up more boost, or went to the turbo, there is a need to increase the spring pressure. The original Springs on the RMW head could be tired and not...
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Forum: Accelerating
10-14-2012, 03:35 PM
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Replies: 141
Views: 12,247
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Forum: Accelerating
08-28-2012, 09:03 PM
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Replies: 251
Views: 27,466
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Forum: Accelerating
04-26-2012, 01:55 AM
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Replies: 141
Views: 12,247
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