Friday, April 13, 2012

2000-2008 Mini Cooper throttle bodies

Give your Mini a boost in horsepower and efficiency! 
Fits Base Mini and Mini Convertible 2002-2008

 (Stock VW T-body shown above, I seem to have misplaced my pre-ported pictures)

The porting focuses on the loading edge from the air intake coming into the throttle body and the back opening it up for a smoother transition into your intake manifold, making these transitions smoother keeps velocity, air flow, throttle response and power up!


 The main flow increase through the throttle body comes from removing half of the throttle shaft and countersinking the bolts holding the blade into the throttle plate giving a great increase in flow and helping to eliminate a choke point in the engine. Just like installing a high flow air filter or free flowing exhaust this makes more power by making air easier to move through the engine.


We also sandblast and then paint the throttle body with a black ceramic engine paint for good looks. We mask off the gasket area's for leak free performance and protect the electrical connectors.

People usually report about the same seat of the pants power increase as a cold air intake or free flow exhaust. Your performance gain will depend on how modified the the rest of the car is and is cumulative with and other mods you have done. The computer usually takes a bit to adapt to the increased flow just as with any other bolt on modification.

These throttle Bodies are 99$ shipped in the continental US vis USPS ground. Shipping abroad or expedited shipping just ask for a quote. We do require a core for all our work and can do this two ways. You can send your stock working throttle body in and upon receipt I will mail out the ported version or (what most people prefer) send me a refundable core deposit of 79$  which will be returned after you ship your throttle body back within 31 days. (otherwise I need to replace the core, I can be flexible with this if you keep communications open)

Thursday, April 12, 2012

E36 M3 Throttle body

Halfshafted and ported e36 m3 throttle body. 

There are not a lot of inexpensive ways to improve the performance of the e36 M3's engine, one is the stock throttle body! We port and polish the throttle body on the intake and output side to match up as perfectly as possible to the gaskets that put the intake tract together. We also take half of the intake shaft off to greatly improve flow thorough the throttle body! The more mods that are done to your car the more power and throttle response this will help you gain. Pictures show the whole story!

 Notice how much air that throttle shaft blocks! Also look (harder to see) how it is slightly oval shaped before and after the throttle plate.

 The ported, halfshafted and painted throttle body:

No throttle shaft on the front, check out the countersunk connectors so they don't stick out into airflow!

 Much more area and much cleaner flow through the throttle body.
Closer to the gasket for improved transition into the intake. 

Great inexpensive mod to get done to your e36 m3. Will help give you extra power like camshafts, air intakes, and headers but at a fraction of the cost! We sell these for 99$ plus a 50$ core charge that is refundable if you return your stock throttle body within 31 days (We cannot wait too long or else we won't have new throttle bodies for other BMW fanatics) Contact us for very reasonable head porting and polishing as well, e-mail TylerC at Netins.net for any questions, thanks!

Volkswagon Golf/Jetta 94-96

94-96 Golf and Jetta throttle bodies for sale.  By removing one side of the throttle shaft you can increase airflow greatly through the unit freeing trapped horsepower! There is also quite a bit of material we are able to remove from the airflow path leading to further improved performance! Compare the oem piece with our improved design. 
 
 
 
 
Notice how restrictive the central throttle plate is as well as the blocky leading edge of the throttle body and material begging to be removed in front of the throttle body squishing down into an oval. 


Then look at the quarter shafted throttle plate with much less restriction, oval shape turned round, and sharper intake 
 

 Its all the same story from the back


 But more pronounced! Its also opened up the the gasket surface so it can have a smooth transition to the intake manifold.


You can see the extensive porting done to these throttle bodies. Note especially the cross sectional area of the shaft, the roof and floor, and how the fasteners for the blade do not stick out into the airflow. The pictures clearly show how much clearer the flow of air is into the engine. This will pay dividends in both throttle response and overall power.

With the same countersunk screws and attractive black finish these modified throttle bodies will look great and outperform the stock units. These new throttle bodies are being sold for 99 plus shipping. If you do not provide a working core for these before shipment, I will add a 50$ refundable deposit. I will refund this if I receive your original working throttle body within 31 days from the time of purchase (Time limit is due to me having a limited number on hand, I must replace non returned throttle bodies to keep up availability for others) E-mail me for cheap ported upper intake options as well! Match it to the throttle body for even more power!

Ported V6 3.8 splitport Mustang heads!

Just got a set of split-port heads ported and ready to be sent out!

We spent most of our time on the exhaust side since the intake already flows pretty well. I focused on enlarging the opening to the top of the ports and the short side radius to straighten out the port shape. This helps keep the velocity of the air high increasing torque and horsepower.  On the intake side I gasket matched the high rpm and low rpm ports, enlarging the high rpm short ports while leaving the longer runners mostly stock, just blending them into the gasket surface (Enlarging these too much can lower your torque.) Before porting the low rpm ports they have a bit of a wall that the air hits when transitioning from the lower intake to the heads which kills the velocity which is so important. I left the intake side rougher to keep fuel atomized and polished the exhaust side to keep exhaust gasses from building up carbon. The more carbon that builds up the more flow and power is hurt. I blended where the intake ports come back together right before the valve with an eye for increasing swirl. I un-shrouded the valves conservatively to keep compression ratio up and polished up the combustion chambers for increased detonation resistance.

Pictures speak a thousand words!

The first picture shows how the exhaust ports are moved up for a straighter exhaust path while not sacrificing velocity, in process picture:

 

 Here is the straight on pre-ported exhaust port. Notice the carbon build up showing the size of the header opening and the caliper reading. That's choking power!


Now after the porting, what a difference!
Check out the view through the port before vs after:


Next check out the intake side of things, this is the short runner before:

And after: 


Same story with the long runners however we simply gasket match them to keep torque up, the long runners are where this motor develops its great torque:

This will make sure there is no wall for the air to hit as it's coming in through the intake manifold keeping velocity as high as possible. Here is a picture of all of the intake ports together:


Much better then stock!
The other side of the heads is what faces the piston. There are two issues here. First is when the casting comes too close to the valves) (shrouding.) Second is the rough casting. The roughness creates peaks which in turn create hot spots. These get hotter then the surrounding chamber actually act as little spark plugs igniting the fuel before it shoudl be. This makes the car start pinging/pre-detonation that destroys engines. This is especially important to avoid if you are advancing your timing, running nitrous, or turbo/supercharging your car. Note how smooth the chambers are and the mild porting around the valves to keep compression up while increasing flow in and out of the valves



Looking back in through the intake ports you can see how much better the short and long runners come together in an area designed to increase swirl. This increases fuel atomization and performance.


Then the ported version, notice how the smaller torque producing ports on the left have approximately the same size opening while the high rpm ports really open up into the valve area for high and low rpm swirl.


 We also get rid of the machining lip you can see here right before the valve and smooth it in


We have probably 15-20 hours  in these and I’m looking to get about 500 shipped with a refundable core charge of 199$. These have freshly lapped valves and springs installed. They are ready to be bolted on. These compare very favorably to other professionally ported heads on the internet with prices at about half what you will find elsewhere. A few years ago I put a set of these on my 2000 mustang with a camshaft and it was like a different car! Kept up with a few v8's I raced! Shoot an email to tylerc at netins.net and I will try to answer any questions you have!