BadSeed
06-03-2014, 08:10 AM
Hello all,
Thought I would start a thread to ask for any recommendations for a race engine to be built for speedway, as it seems many of you may have had experiences with the following (instead of myself just race off and pay at a performance shop, actually get some advice on what works etc first).
Obviously there are rules which restrict me, which I will list below, any advice is much appreciated (this engine is to be built up over time, to start off with will just be running ralliart cams, a tune, exhaust etc keeping it mostly standard until I get the setup right).
Basic Engine Rules:
Engines will be inspected on the basic that all parts used in/on all engines must comply with the specifications/dimensions specified in the original (O.E.M.) manual produced by the manufacturer for the standard engine; with the exception of the listed permitted modifications. The owner/driver is responsible to prove the above and produce information when necessary to validate the claim.
Engine Balancing: The balancing of any engine componentry or removal of any balance shaft in this class is STRICTLY PROHIBITED.
A standard engine is allowed no more than .060” overbore and .060” for head facing.
OFFSET boring of bearings &/or cylinders, offset grinding of crankshaft or angled facing of head to block surfaces are not permitted
Engine to be of standard stroke, con-rods and crankshaft to remain as OEM parts for the engine model;
Intake manifold/plenum chamber to remain OEM standard, this means no machining, no welding, no extra vacuum ports, or drilling for sensors.
CAMSHAFT and camshaft timing parts are not restricted. Camshaft lifters to be solid or hydraulic. The use of adjustable lifters is permitted.
The use of performance parts in the valve train is prohibited, e.g. Roller rockers, cam followers etc.
No adjustable fuel pressure regulators
Size of throttle body to be OEM type and size for model being used and to be standard in INTERNAL and external appearance. (No machining or alteration permitted)
All standard sensors must be fitted and be operating including fuel pressure regulator except oxygen sensor and coolant sensor. The use of knock sensors are optional
OEM injectors to be used. Eg. Bosch to Bosch.
Open exhaust/extractor system allowed
These are just the basic rules from the rule book, there are a few more, long post I know, cheers for any info/assistance or maybe just things you have tried that have worked well? :)
Or info on where best to chase down things like Pajero pistons etc..
Thanks :hmm:
Thought I would start a thread to ask for any recommendations for a race engine to be built for speedway, as it seems many of you may have had experiences with the following (instead of myself just race off and pay at a performance shop, actually get some advice on what works etc first).
Obviously there are rules which restrict me, which I will list below, any advice is much appreciated (this engine is to be built up over time, to start off with will just be running ralliart cams, a tune, exhaust etc keeping it mostly standard until I get the setup right).
Basic Engine Rules:
Engines will be inspected on the basic that all parts used in/on all engines must comply with the specifications/dimensions specified in the original (O.E.M.) manual produced by the manufacturer for the standard engine; with the exception of the listed permitted modifications. The owner/driver is responsible to prove the above and produce information when necessary to validate the claim.
Engine Balancing: The balancing of any engine componentry or removal of any balance shaft in this class is STRICTLY PROHIBITED.
A standard engine is allowed no more than .060” overbore and .060” for head facing.
OFFSET boring of bearings &/or cylinders, offset grinding of crankshaft or angled facing of head to block surfaces are not permitted
Engine to be of standard stroke, con-rods and crankshaft to remain as OEM parts for the engine model;
Intake manifold/plenum chamber to remain OEM standard, this means no machining, no welding, no extra vacuum ports, or drilling for sensors.
CAMSHAFT and camshaft timing parts are not restricted. Camshaft lifters to be solid or hydraulic. The use of adjustable lifters is permitted.
The use of performance parts in the valve train is prohibited, e.g. Roller rockers, cam followers etc.
No adjustable fuel pressure regulators
Size of throttle body to be OEM type and size for model being used and to be standard in INTERNAL and external appearance. (No machining or alteration permitted)
All standard sensors must be fitted and be operating including fuel pressure regulator except oxygen sensor and coolant sensor. The use of knock sensors are optional
OEM injectors to be used. Eg. Bosch to Bosch.
Open exhaust/extractor system allowed
These are just the basic rules from the rule book, there are a few more, long post I know, cheers for any info/assistance or maybe just things you have tried that have worked well? :)
Or info on where best to chase down things like Pajero pistons etc..
Thanks :hmm: