high Compression Questions
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high Compression Questions
I just ordered a set of CTR Pistons for my LS/VTEC. I heard i will encounter Gas problems such as not being able to use Pump Gas. My compression Came out to a 12.4:1 CR. One of my more experience tech at work told me if I did some headwork that i wouldn't have to worry about using Pump fuel. Basically right now This is what my set up is.
Head work-
B16 Head, Skunk2 Valvetrain,Skunk2 STD Size Valves, KMS Silicon Bronze Valve Guides, AEBS IM, Hondata IM gasket, 70MM Holley TB, AEM Fuel Rail, RC 310 Injectors, B&M FPR, Port and Polish, 3 Angle Valve job, Buddy Club Spec 4's cams and camgears, OEM 3-Layer Head Gasket, and TODA Timing BELT.
Block-
B18A1, Shotpeened PR4 Rods, CTR 81mm Pistons, ACL Race Bearings and Thrust Washers, P30 OIL and Water Pump, ARP MAIN, ROD, AND Head Bolts.
Am I safe to use 93 Octane or will I encounter Pings and pre Det.
Head work-
B16 Head, Skunk2 Valvetrain,Skunk2 STD Size Valves, KMS Silicon Bronze Valve Guides, AEBS IM, Hondata IM gasket, 70MM Holley TB, AEM Fuel Rail, RC 310 Injectors, B&M FPR, Port and Polish, 3 Angle Valve job, Buddy Club Spec 4's cams and camgears, OEM 3-Layer Head Gasket, and TODA Timing BELT.
Block-
B18A1, Shotpeened PR4 Rods, CTR 81mm Pistons, ACL Race Bearings and Thrust Washers, P30 OIL and Water Pump, ARP MAIN, ROD, AND Head Bolts.
Am I safe to use 93 Octane or will I encounter Pings and pre Det.
Last edited by aznkhmerracernza; Sep 11, 2006 at 05:31 PM.
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I just ordered a set of CTR Pistons for my LS/VTEC. I heard i will encounter Gas problems such as not being able to use Pump Gas. My compression Came out to a 12.4:1 CR. One of my more experience tech at work told me if I did some headwork that i wouldn't have to worry about using Pump fuel. Basically right now This is what my set up is.
Head work-
B16 Head, Skunk2 Valvetrain,Skunk2 STD Size Valves, KMS Silicon Bronze Valve Guides, AEBS IM, Hondata IM gasket, 70MM Holley TB, AEM Fuel Rail, RC 310 Injectors, B&M FPR, Port and Polish, 3 Angle Valve job, Buddy Club Spec 4's cams and camgears, OEM 3-Layer Head Gasket, and TODA Timing BELT.
Block-
B18A1, Shotpeened PR4 Rods, CTR 81mm Pistons, ACL Race Bearings and Thrust Washers, P30 OIL and Water Pump, ARP MAIN, ROD, AND Head Bolts.
Am I safe to use 93 Octane or will I encounter Pings and pre Det.
Head work-
B16 Head, Skunk2 Valvetrain,Skunk2 STD Size Valves, KMS Silicon Bronze Valve Guides, AEBS IM, Hondata IM gasket, 70MM Holley TB, AEM Fuel Rail, RC 310 Injectors, B&M FPR, Port and Polish, 3 Angle Valve job, Buddy Club Spec 4's cams and camgears, OEM 3-Layer Head Gasket, and TODA Timing BELT.
Block-
B18A1, Shotpeened PR4 Rods, CTR 81mm Pistons, ACL Race Bearings and Thrust Washers, P30 OIL and Water Pump, ARP MAIN, ROD, AND Head Bolts.
Am I safe to use 93 Octane or will I encounter Pings and pre Det.
93 oct will be ok once the vehicle is tuned properly.
I have tuned several 12.0-12.5:1 ctr piston setups.
They are ping happy, especially with hot intake air temperatures.
Unfortunently they have to be de-tuned to prevent pre-ignition on 93 oct with florida's hot IATs.
I would recommend double stacking a oem headgasket to lower the c/r just so you have a little more room to play with.
Let me know if you have any other questions. I will be more then happy to answer them.
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no problems with my 12.6:1 compression ratio on 93 as of yet
but due to autox'ing in the Florida heat, i've opted to head over to Sunoco on Dale Mabry by Waters and go for the 100 octane
Amazing how it has stayed at $5.99 per gallon all summer long. I only drive the car for events so I don't mind filling it up.
but due to autox'ing in the Florida heat, i've opted to head over to Sunoco on Dale Mabry by Waters and go for the 100 octane
Amazing how it has stayed at $5.99 per gallon all summer long. I only drive the car for events so I don't mind filling it up.
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if you can only race me in a straight line then whats the point 
...91 SMF SCCA
...91 SMF SCCAhttp://www.flickr.com/photos/8341770@N07/5601083432/http://www.flickr.com/photos/8341770@N07/5601083432/ by http://www.flickr.com/people/8341770@N07/, on Flickr
I see people out there spending money on the car to improve it … If you spend half that effort just working on your driving skills, making you and the car work together as a team, then you’ll go faster – period. To make the car go a second faster on the track takes a lot more energy and money than making yourself drive it one second faster.
– the late Tom Thrash SCCA Solo E Production
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no problems with my 12.6:1 compression ratio on 93 as of yet
but due to autox'ing in the Florida heat, i've opted to head over to Sunoco on Dale Mabry by Waters and go for the 100 octane
Amazing how it has stayed at $5.99 per gallon all summer long. I only drive the car for events so I don't mind filling it up.
but due to autox'ing in the Florida heat, i've opted to head over to Sunoco on Dale Mabry by Waters and go for the 100 octane
Amazing how it has stayed at $5.99 per gallon all summer long. I only drive the car for events so I don't mind filling it up.
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RIP Robert Kolp aka 00ek 4/07
RIP Pablo Garcia aka FatHead 9/07
_Jake D
RIP Kevin Gonzales AKA Slo_Si 9/06
RIP Robert Kolp aka 00ek 4/07
RIP Pablo Garcia aka FatHead 9/07
_Jake D
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no problems with my 12.6:1 compression ratio on 93 as of yet
but due to autox'ing in the Florida heat, i've opted to head over to Sunoco on Dale Mabry by Waters and go for the 100 octane
Amazing how it has stayed at $5.99 per gallon all summer long. I only drive the car for events so I don't mind filling it up.
but due to autox'ing in the Florida heat, i've opted to head over to Sunoco on Dale Mabry by Waters and go for the 100 octane
Amazing how it has stayed at $5.99 per gallon all summer long. I only drive the car for events so I don't mind filling it up.
What is your distributor's base ignition timing at ?
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For more information visit http://www.Phearable.net or call 1-888-236-9831
Authorized Dealer & Tuner for: Hondata, eCtune, Neptune, AEM, Crome, Precision Turbo, Omni Power, Walbro, Innovate & more. Dyno Tuning Services, Ecu Chipping, Chipped Ecus, Conversion Harnesses, Widebands, Fuel Injectors, Fuel Pumps, Map Sensors & more.
For more information visit http://www.Phearable.net or call 1-888-236-9831
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d16y8 on 93 octane
12 degrees of timing at dizzy
cam gear is negative by . can't remember
38 for the fpr
stock obd0 ecu program
engine runs great. no detonation. no problems.
270 static compression across the board.
12 degrees of timing at dizzy
cam gear is negative by . can't remember
38 for the fpr
stock obd0 ecu program
engine runs great. no detonation. no problems.
270 static compression across the board.
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if you can only race me in a straight line then whats the point ...91 SMF SCCA
...91 SMF SCCAhttp://www.flickr.com/photos/8341770@N07/5601083432/http://www.flickr.com/photos/8341770@N07/5601083432/ by http://www.flickr.com/people/8341770@N07/, on Flickr
I see people out there spending money on the car to improve it … If you spend half that effort just working on your driving skills, making you and the car work together as a team, then you’ll go faster – period. To make the car go a second faster on the track takes a lot more energy and money than making yourself drive it one second faster.
– the late Tom Thrash SCCA Solo E Production
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If lets say you are running a standard p28 style map with a base timing of 12 deg btdc. Your total timing values at full load are probably around 24.50 deg btdc. This would explain why you are not having any kind of pre-ignition
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For more information visit http://www.Phearable.net or call 1-888-236-9831
Authorized Dealer & Tuner for: Hondata, eCtune, Neptune, AEM, Crome, Precision Turbo, Omni Power, Walbro, Innovate & more. Dyno Tuning Services, Ecu Chipping, Chipped Ecus, Conversion Harnesses, Widebands, Fuel Injectors, Fuel Pumps, Map Sensors & more.
For more information visit http://www.Phearable.net or call 1-888-236-9831
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I'd recommend dropping the comp ratio down to 11-11.5:1. No sense running higher compression and then having to de-tune your car to be able to drive it. I've built street NA motors in comp ratios from 11:1 to 13:1 and from experience I don't recommend higher than 11.5:1 anymore.
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Don't bother giving me "rep", I won't return it and I think it is stupid.
Gracie Barra Clearwater
Gyms in Clearwater, St. Pete and Port Richeypm me if you are interested in trying a free class at any of the gyms.
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I'd recommend dropping the comp ratio down to 11-11.5:1. No sense running higher compression and then having to de-tune your car to be able to drive it. I've built street NA motors in comp ratios from 11:1 to 13:1 and from experience I don't recommend higher than 11.5:1 anymore.
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i love AUTOZONE
MY CAR iS PROTECTED BY ZOOMBAK GPS LOCATOR IS YOURS?
175+served in engines built from minime to gsr/lsvtec,b16 b20vtec,d15 k24 powerhouses or just rebuilds.life is good
i like when people don't take my advice.cause then i make more money when u need it rebuild the right way!
how many speed holes do i need in my bumper,b4 i can run 15's?
i love AUTOZONE
MY CAR iS PROTECTED BY ZOOMBAK GPS LOCATOR IS YOURS?
175+served in engines built from minime to gsr/lsvtec,b16 b20vtec,d15 k24 powerhouses or just rebuilds.life is good
i like when people don't take my advice.cause then i make more money when u need it rebuild the right way!
how many speed holes do i need in my bumper,b4 i can run 15's?
