Won't a IM allowance blur the difference between a B18C1 and a B18C5?
Won't a IM allowance blur the difference between a B18C1 and a B18C5?
Demetrius Mossaidis aka 'Mickey' #12 ITA NESCCA
'92 Honda Civic Si
STFU and "Then write a letter. www.crbscca.com"
2013 ITA NARRC Champion and I have not raced since.
Of course! It wouldn't just blur it, it would destroy it*. That's why I'm OK we have this rules restriction...
GA
* The B18C5 cam has more lift than the STL limit, more compression than the C1, and it's already ported and polished from the factory...a built B18C1 with open intake would be making on-par power with the C5...but given the stock manifold it could never match the C5 with common rules.
^^ agreed....
Highlights of B18C Spec R compared to standard B18C GSR
1. Camshaft - Wide-angled, high-lift, high-durability camshaft *
2. Exhaust Valve Spring - High-lift, dual-layered spring *
3. Spark plug - High-heat-type #7 platinum plug *
4. Engine Stiffener - Aluminum die-cast, high-durability, one-piece type *
5. Crankshaft - Full-counterweight, 8-weight, high-output, custom crankshaft
6. Connecting Rod - Custom TypeR rod, high-durability, lightened *
7. Pistons - High-compression, low-friction, custom pistons *
8. Inlet Valves - Lightened inlet valves
9. Intake Manifold - Custom tuning, single-port type. #
10. Throttle Body - 62 mm (2.4 in) wide-mouth throttle body. #
11. Inlet Valve Springs - High-lift, flat-surfaced, dual-layered spring *
12. Port Buffing done by hand
13. Fastening of Connecting Rod done with micrometer.
14. 98spec engine has stainless steel 4-1 exhaust manifold *
* - irrelevant considering current STL rules
# - irrelevant if IM/TB allowance existed
So....crank, lighter valves, "hand" port buffing... that's significant.
Last edited by mossaidis; 10-26-2010 at 01:31 PM. Reason: updated notation for rods...
Demetrius Mossaidis aka 'Mickey' #12 ITA NESCCA
'92 Honda Civic Si
STFU and "Then write a letter. www.crbscca.com"
2013 ITA NARRC Champion and I have not raced since.
What fastrack are the STL rules laid out in? - nevermind. Found it.
So the VW / Audi 1.8t engine is an option.
I see that you must retain the original cylinder head and intake manifold when swapping motors. Can you pull the stock manifold and place a 4->1 header and run it without the turbo? I mean the turbo is part of the exaust no?
I guess cam lift would then be limited to the 4v spec?
Last edited by shwah; 10-26-2010 at 11:02 PM.
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