Newest package from Parsons Racing Engines is our 414cc shortblock Stage I racing engine! If you have a Honda GX390 and want to use your existing Honda cylinder head then this shortblock is what you are looking for. We realize that you may already have spent alot of time and money porting your Honda GX390 cylinder head so we decided this would be a great opportunity to release our 414cc shortblocks. No need to take your GX390 block to a machine shop to have your cylinder bored to achieve more displacement, just use our shortblock with the 90mm bore and a 1mm longer stroke! This complete combination is a very reliable package. It also includes the copper head gasket, Lucas karting oil, Hard faced welded camshaft, Billet connecting rod w/rod bearings and a milled hypereutectic piston with a decked block. See the features below for more information: *image above may not be actual image*
Specifications
Cylinder Bore
90mm
Crank Stroke
65mm
Camshaft duration
242 @ .050" lobe lift
Camshaft lift
.283" cam lift (Use our 1.3:1 ratio billet roller rocker arms or our 1.3:1 stamped steel rocker arms)
Lucas Karting Oil
0W-20 specially designed karting oil
Crank length
Crankshaft is shortened 1 1/4" inches to accomodate kart applications (Use our Bully Turbo clutch for this application for awesome torque transfer to the rear wheels !)
Features
Benefits
Forged Steel Crankshaft
Our 414cc engines feature a forged steel crankshaft with a 1mm longer stroke than the Honda GX390 crank!
Milled Hypereutectic Piston
This Stage I package includes a milled hypereutectic piston and the block is then decked to increase compression ratio
Copper Head Gasket
Our copper head gasket distributes the heat evenly across the cylinder deck for added dependability
Billet Aluminum Rod
This billet connecting rod includes a babbit rod bearing with a forced oil dipper for maximum oil distribution to all critical engine components!
Performance Camshaft
This package includes our hard faced welded cam lobe system
Viton Crank Seals
These are high temperature resistant oil seals for racing applications
