2.0L...Use JUN 3's instead of BC4's for more clearance with .5 oversized valves??

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Jul 20, 2005 | 09:28 AM

JerseySiPOS

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From: POSeRs, NJ, US

2.0L...Use JUN 3's instead of BC4's for more clearance with .5 oversized valves??

--2.0L, 85X89, ported b16 head with .5 oversize valves, 12.5 CP pistons and Buddy Club 4 cams.

Whether im claying the motor or not, do you think it's really worth the risk to run BC4 cams with this setup?? Mainly because of the .3mm extra lift on both intake and exhaust. Valve to valve and valve to piston clearance is looks very close, leaving little room for cam degreeing.

Im thinking of running Jun stage 3's instead. Comparing the 3 cams Hi lobe, BC4's and Skunk2 stage 2 have the same valve timing events.

Im looking to emphasize 6000-9000 rpms. Jun3's???

thanks

Buddy Club 4
IN:
Duration: 266 deg @ 1mm, 12.3mm Lift
Opening@1mm: 37 BTDC
Closing@1mm: 49 ABDC
Lobe Centerline: 96 deg

EX:
Duration: 262 deg @ 1mm, 11.8mm Lift
Opening@1mm: 61 BBDC
Closing@1mm: 21 ATDC
Lobe Centerline: 110 deg

Skunk2 Stage 2
IN:
Duration 266 deg @1mm, 12.3mm lift
Opening@1mm: 37 degress BTDC
Closing@1mm: 49 degress ABDC
LOBE CENTER at 96 deg

EX:
Duration 262 deg @ 1mm, 11.8mm lift
Opening@1mm: 61 degress BBDC
Closing@1mm: 21 degrees ATDC
LOBE CENTER at 110 deg

Jun Stage 3
IN:
Duration 265 deg @1mm, 12.0mm lift
Opening@1mm: ?? degress BTDC
Closing@1mm: ?? degress ABDC
LOBE CENTER at 110 deg

EX:
Duration 265 deg @ 1mm, 11.5mm lift
Opening@1mm: ?? degress BBDC
Closing@1mm: ?? degrees ATDC
LOBE CENTER at 110 deg

Jul 20, 2005 | 09:30 AM

Supernatural

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From: East Bumfuckville, Wisconsin

Re: 2.0L...Use JUN 3's instead of BC4's for more clearance with .5 oversized valves?? (JerseySiPOS)

ive run stage 3 skunks with .5mm oversized intake and exhaust valves

Jul 20, 2005 | 09:44 AM

JerseySiPOS

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From: POSeRs, NJ, US

Re: 2.0L...Use JUN 3's instead of BC4's for more clearance with .5 oversized valves?? (SUPERNATURAL)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by SUPERNATURAL »</TD></TR><TR><TD CLASS="quote">ive run stage 3 skunks with .5mm oversized intake and exhaust valves </TD></TR></TABLE>

the head is ported by Headgames and i know someone local that runs skunk stage 3's as well. Just out of curiosity, how much room do you have for cam degreeing?

Jul 20, 2005 | 10:21 AM

MAX_CFM

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From: Charlotte, NC, USA

Re: 2.0L...Use JUN 3's instead of BC4's for more clearance with .5 oversized valves?? (JerseySiPOS)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by JerseySiPOS »</TD></TR><TR><TD CLASS="quote">the head is ported by Headgames and i know someone local that runs skunk stage 3's as well. Just out of curiosity, how much room do you have for cam degreeing?</TD></TR></TABLE>

Ask him what the stem to spring pad Hieght is on the ex and intake valves ..

I can tell you if it will work ...