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high compression bad for spray?

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Old Jul 3, 2009 | 09:34 AM
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Default high compression bad for spray?

I have a b16a block, ctr pistons, stage 2 cams and a head package. a couple people from the machine shop are telling me my compression will be too high to run a 50 shot (dry) but I will still be able to run on pump gas (91) any opinions on this?
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Old Jul 3, 2009 | 11:51 AM
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Default Re: high compression bad for spray?

You can probably run that as long as you are running at least 1 step colder plugs and you're well tuned. High compression isn't really bad for anything but it significantly reduces the amount you can be off in your tuning and part selection as well as gas you burn.
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Old Jul 3, 2009 | 01:37 PM
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Default Re: high compression bad for spray?

Originally Posted by 00Red_SiR
You can probably run that as long as you are running at least 1 step colder plugs and you're well tuned. High compression isn't really bad for anything but it significantly reduces the amount you can be off in your tuning and part selection as well as gas you burn.
running pump gas and church is tuning it on s300 as soon as break in is finished
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Old Jul 3, 2009 | 01:40 PM
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Default Re: high compression bad for spray?

I would ask them about spraying, they are very good and would be able to tell you what you need to do.
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Old Jul 3, 2009 | 01:56 PM
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Default Re: high compression bad for spray?

forged pistons? if so you can spray more then that safely. if not you should still have no problem spraying just 50 or even upwards of 100 on a good tune like stated above get colder plugs and take maybe 4-6 degrees off your timing read you plugs and adjust from there. with the right size injector and the s300 you should be good.
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Old Jul 3, 2009 | 01:58 PM
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Default Re: high compression bad for spray?

Originally Posted by 00Red_SiR
I would ask them about spraying, they are very good and would be able to tell you what you need to do.
well theres not much left "to do". all there is to do is get advise on wether it will handle a 50 shot or not on pump gas and colder plugs.

b16a block, ctr pistons, head milled 5 thousandths. blox b cams, aem adjustables, BC SS flat faced valves, springs and retainers, all new seals guides, port and polished and flow tested, blox manifold, hondata gasket. RC 550's and a adjustable fpr, spoon sport 4-1 header 2.5" collector. custom exhaust. s300. ctr pully, 7 lb flywheel, act 6 puck sprung clutch. s80 trans with lsd. in a hatch that weighs 202 will full interior and a full tank.

i just want a 50 shot on back up and know im not gonna hurt anything. im using brand new factory head studs unfortunately, funds ran low and I couldnt get arp head studs but they will come later
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Old Jul 4, 2009 | 05:04 AM
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Default Re: high compression bad for spray?

You misunderstood what I was saying. By telling you "what you would need to do" it didn't mean adding anymore glorified parts. It meant that they would be able to tell you how your timing curve/total timing would need to be altered, exactly what plugs you should run and how much extra fuel should be added...all tuning things.

As far as using stock headbolts, most people do not need ARP studs. They're nice but they are overkill in most builds as most people don't realise how strong the stock bolts are in a B16a/b18c-series motor.
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