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91 Hatch
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Discussion Starter #1
i kno this is d-series i also have a b-series site forum but i think this site is more helpful...ok i have a b16 with a type r head.. stock bottom end and stock head and i was wondering the max boost i can run on the motor??i did some searching but really didnt find anything with a b16 with a type r head??and i was going to replace the head gasket because its leaking with arp head studs.. but not sure if a multi layed steel head will drop the compression too low??
 

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there is no set max boost number.you may want to keep the whp around 300 though.if you get a lil thicker head gasket that may make a little less compression.you probably have around 10:1 right now
 

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FYB or FIU tune, pick 1
95 Del Sol Si
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sorry this is D-series.org we cant help you.



lol but seriously theres no "max boost" secret formula here, the motor and internal parts are limited to horsepower not psi. The compression ratio may cause early detonation so high octane gas is a must of course but the tune may need to be richer than normal. There not really such a thing as to low of compression on a boosted setup but if you plan on running boost on an untuned motor then please politely gtfo, if you trying to just order a wastegate spring that allows you to run a turbo on a stock ecu then bye bye. get a correctly sized turbo that matchs your goals.
 

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91 Hatch
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Discussion Starter #5
i have a 50trim garret turbo,550cc injectors,hks bov.and a p28 on crome and of course the rest of the kit...but im looking for a reliable daily driver too tho so will 8lb be safe with a good tune??and will a b16 mls head gasket be safe with 8lb of boost??thanks for the help
 

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91 Hatch
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Discussion Starter #7
so there isn't a safe boost level for a stock head and bottom end??and how anout the head gasket and arp studs?
 

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From what i heard the b16 and the Type R head are almost equal, type r has a more agrasive camshaft and it has a slide port runners.

I will rather located an ls bottom end and install the b16 head (lsvtec) on it lowering compression to 9:1 which will be a lot less forgiving than a high compression engine. IS ALL IN THE TUNE.
I'm sure it has been done before with a b16 or a type R motor but as i heard many times before, most people don't turbocharge a type r engine because the high compression and it doesn't make sense to buy such an expensive engine to go turbo cause you gonna ended up replacing most parts anyway.

But like a mention before, IS ALL IN THE TUNING, it can be done is just isn't practical!!
 

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Type-R = Ported B16 Head
Max Safe Power on B16 = ~300whp

You see people run more than 300whp and it holds up. But you also see people run less than 300whp and the kill ringlands. From the little b-series research I've done, I mostly see them blowing ringlands.
 

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91 Hatch
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Discussion Starter #12
Ok I understand that! Im asking how much horsepower is safe on a b16 bottom end with a type r head?
 

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replace the rod bolts those are a weak link if your tuner is good you will be fine with the higher compression and more than likely really like it. If you want to go ls vtec get a gsr block and put ls internals in it. But that is just more money spent. Run what you got and have some fun it should rip the streets up with the 50trim. You will run out of injector quickly with the 550's.
 

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Dude boost doesnt mean @#!*% , horsepower is what will break your motor not psi.
I disagree with this, psi IS what breaks your motor...hp is the end result in different variables such as flow, compression, and combustion. the added pressure on the cylinder/ rods/ pistons is what tears shit up.
 

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Ok I understand that! Im asking how much horsepower is safe on a b16 bottom end with a type r head?
Your head is not going to break from a little boost, so it doesnt matter what head youre running. Just look at what other people with b16's consider "safe". 300whp is mentioned many times. Run premium gas and the compression wont be a problem for a good tuner.
 

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racist-bigot-sexist-homophob
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sorry this is D-series.org we cant help you.



lol but seriously theres no "max boost" secret formula here, the motor and internal parts are limited to horsepower not psi. The compression ratio may cause early detonation so high octane gas is a must of course but the tune may need to be richer than normal. There not really such a thing as to low of compression on a boosted setup but if you plan on running boost on an untuned motor then please politely gtfo, if you trying to just order a wastegate spring that allows you to run a turbo on a stock ecu then bye bye. get a correctly sized turbo that matchs your goals.
How in the hell does a wg spring "allow you to run a turbo on a stock ecu"? Please explain because either you don't know wtf you're talking about or can't articulate what you are trying to say.

I disagree with this, psi IS what breaks your motor...hp is the end result in different variables such as flow, compression, and combustion. the added pressure on the cylinder/ rods/ pistons is what tears shit up.
Uh no. HP breaks shit. I can bolt a turbo the size of a half dollar to my stock z6 and run say 20 psi and maybe only make 170 whp. If I bolted a gt35r to my shit and ran 20 psi I would most definitely break some shit.
 

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FYB or FIU tune, pick 1
95 Del Sol Si
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How in the hell does a wg spring "allow you to run a turbo on a stock ecu"? Please explain because either you don't know wtf you're talking about or can't articulate what you are trying to say.



Uh no. HP breaks shit. I can bolt a turbo the size of a half dollar to my stock z6 and run say 20 psi and maybe only make 170 whp. If I bolted a gt35r to my shit and ran 20 psi I would most definitely break some shit.
The OP acted like a certain amount of boost would be fine on his engine. So what i thought he was looking for would be for us to say something like 8 psi is safe, then he goes and buys an 8 psi spring, throws on the kit and figures its safe. Sorta like most people think that its fine to run 6 psi on a D16 with stock injectors and ECU, no matter what their car does they feel that 6 psi is safe since its not that much. Sorry its kinda hard to explain...
 

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Oh I gotcha....sounded like you were saying something like if you ran a 5psi spring then you could run a stock ecu or some shit.
 
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