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DSM UPGRADE
New Products
DSM Stage 1 Package
DSM Stage 2 Package
DSM Stage 3 Package
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Upgrade Sequencing — Stage 3
Take your car to as much as 650 hp - and click off high 10's in the 1/4 mile!
- Buschur Racing Shortblock Assembly - or rebuild the engine yourself
Now that your car is making some SERIOUS horsepower with just bolt-on products, the next step is to ensure that the engine is operating at an optimal level with full compression, etc.
We are frequently asked to rebuild engines that a customer's machine shop has machined improperly - it may be much less expensive in the long run - to buy one of our Racing Shortblocks with much less downtime and hassle for you!
If you rebuild your own engine, be sure to replace all bearings, gaskets and seals. We sell 4G63 Engine Rebuild and Gasket sets.
- Piston Upgrade
Upgrade to a higher compression ratio.
The lighter, more durable forged Venoila or JE Forged pistons raise the compression ratio for 1G engines from 7.8:1 to 8.5:1 resulting in more power and better response.
2G pistons provide a 8.5:1 compression ratio, and can be used on 1G models if the rods are correctly machined. We can perform this rod modification for you, and can provide you with the 2G pistons to be mated to your rods.
- Knife-edged Crankshaft
This machining work enables the crankshaft to "cut" through the engine oil with less friction; increasing overall engine efficiency.
The crankshaft must be balanced after this modification is performed.
- Remove Balance Shafts
Removing the balance shafts from inside the engine reduces the engine's rotating mass by 10 lbs, increasing horsepower, and improving how quickly the engine "revs", with only a small increase in engine vibration.
You will need our Balance Shaft Eliminator Kit to perform this modification yourself – it is pre-installed in the Buschur Racing Shortblocks.
The engine MUST be rebalanced after this modification.
- Polish and/or Shotpeen the Rod Beams
Both methods strengthen the rods by eliminating microscopic "cracks".
- Replace the Front Cover assembly
If you have not recently replaced your timing belt, all tensioners, oil pump, etc. now is the time do it!
- Lightened Flywheel
We can exchange your stock flywheel for one that has been lightened by as much as 4 lbs. A lightened flywheel reduces the engine rotational mass, and lets the engine rev faster. We have run 60' times in the 1.50's with a lightened flywheel.
- Balance Engine
The entire rotating assembly (Flywheel, Crankshaft, Rods, Caps, and Pistons) must be balanced together as a set. The Buschur Racing Shortblock assemblies are already balanced.
- Replace the Cylinder Head
Huge gains in power can be achieved using our Stage 1, 2, or 3 Cylinder Heads. See the Engine Category in our Parts Catalog for more details about our Cylinder Heads.
- Port-Match the Cylinder Head
Match the size of the Intake and Exhaust ports with those on the Intake and Exhaust Manifolds (about 2" inside each port / runner).
- Extrude Hone the Cylinder Head
We have seen gains as much as 27 hp achieved from the improved flow.
A 3-angle or 5-angle valve job must be done once the Extrude Hone process is complete.
With the engine modifications in Stage 3, engines can produce between 500 - 650 hp (depending upon which level of modifications are chosen).
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