I need HELP!.."Ya cant put a turbo on yur car son, it has too much compression!"
03-04-2005, 03:30 PM
#31
0.0 BAR
Join Date: Mar 2005
Posts: 4
Re: I need HELP!.."Ya cant put a turbo on yur car son, it has too much compressi
Originally Posted by baldur
Originally Posted by iluvdrt
No engine has a compression ratio to high to boost if it is built for it. A diesel is a perfect example. You will be fine boosting your f22. Hell I say boost and then put an H22 head on it. Even more fun.
They simply aren't even remotely similiar when you look at the combustion process.
There's no such thing as detonation in a diesel, as they don't compress a fuel mixture, just air. The combustion is completely under control and centralized around the injector. And even when there is no such thing as detonation on a diesel, the manufacturers still use lower compression on their turbo engines to reduce mechanical stress.
Let me see you make any power out of a 16:1 compression petrol engine with a turbocharger, at least 0.5 bar boost and it must be able to sustain flat out full throttle for 5-10 miles without blowing to pieces.
There is such a thing as too high compression ratio, however it comes down to what kind of combustion chamber design you have, what kind of cylinder heads, rod to stroke ratio, rpm range where boost will be in and last but not least type of fuel. Both octane ratings and evaporative/thermal properties decide how good the fuel is on a high pressure engine.
You want the peak cylinder pressure to happen just a few degrees after TDC. If you are not able to get the peak pressure to happen at the right time because your ignition is retarded around the crank to reduce detonation, your compression ratio is too high for the fuel you're using.
At high rpm everything happens a lot quicker so each degree in spark timing becomes less critical, however the heat builds up a lot faster at high rpms if something is not done properly so most people melt their engines at high rpms.
<-------stupid diesel mechanic :P
03-04-2005, 10:01 PM
#32
0.5 BAR
Join Date: Jul 2003
Posts: 109
Re: I need HELP!.."Ya cant put a turbo on yur car son, it has too much compression!"
he will most likely blow that motor on 8psi if he has just an FMU... thats shitty fuel managemant
True.... I am not 100% familiar with uberdata, so maybe a good option. (use intercooler please) I do agree that if he can get his tune correct he should be able to boost w/o a prob. I am just concerned about the conditions of the rings on that bad boy w/that many miles. I have seen a guys oil filler cap pop off his valve cover bc of excess crankcase pressure. He damn near didn't need a wastegate, his blowby kept his boost down.
True.... I am not 100% familiar with uberdata, so maybe a good option. (use intercooler please) I do agree that if he can get his tune correct he should be able to boost w/o a prob. I am just concerned about the conditions of the rings on that bad boy w/that many miles. I have seen a guys oil filler cap pop off his valve cover bc of excess crankcase pressure. He damn near didn't need a wastegate, his blowby kept his boost down.
03-05-2005, 11:31 AM
#33
3.0 BAR
Join Date: Aug 2004
Posts: 2,028
Re: I need HELP!.."Ya cant put a turbo on yur car son, it has too much compressi
Here's what you should do:
Get a compression test - if it turns out good - boost your car. THe Accord F22 engine is pretty stout. Like B16CRXT said there are people boosting B16's on this website and not really worrying about it that much. The compression ratio on those is 10.2:1 or 10.4:1 I think depending on the year it was made in.
If your compression is good though, don't worry about it. If it's not, well then you can either rebuild the engine you have now or save up for a swap, there's several swaps you can do that just bolt right in. F22B, F20A, H22, etc etc.
Get a compression test - if it turns out good - boost your car. THe Accord F22 engine is pretty stout. Like B16CRXT said there are people boosting B16's on this website and not really worrying about it that much. The compression ratio on those is 10.2:1 or 10.4:1 I think depending on the year it was made in.
If your compression is good though, don't worry about it. If it's not, well then you can either rebuild the engine you have now or save up for a swap, there's several swaps you can do that just bolt right in. F22B, F20A, H22, etc etc.
03-05-2005, 07:36 PM
#34
1.0 BAR
Join Date: Oct 2004
Posts: 273
Re: I need HELP!.."Ya cant put a turbo on yur car son, it has too much compressi
Originally Posted by N1ghtM0nkey
Get a compression test - if it turns out good - boost your car.
and about the diesel- thats why a lot of truck drivers leave their semi's running all night- diesels rely on detonation to burn the fuel, so they do shitty until the engine warms up (denser air is harder to ignite, thats the whole idea behind the intercooler on a fi car, to prevent it) also why turbo diesels make so much more power, the turbo does a great job of heating up all the air. its like the opposite of what otto-cycle engines want to do- instead of wanting colder denser air diesels make more power with hotter air.
03-05-2005, 07:58 PM
#35
0.0 BAR
Join Date: Jun 2003
Posts: 0
Re: I need HELP!.."Ya cant put a turbo on yur car son, it has too much compression!"
Originally Posted by iluvdrt
No engine has a compression ratio to high to boost if it is built for it. A diesel is a perfect example. You will be fine boosting your f22. Hell I say boost and then put an H22 head on it. Even more fun.
lol this is hillarious. A diesel runs off the principal of autoignion where in a a traditional gasoline motor it will destroy the motor. Apples and oranges...
03-05-2005, 07:58 PM
#36
1.5 BAR
Join Date: Aug 2003
Posts: 1,194
Re: I need HELP!.."Ya cant put a turbo on yur car son, it has too much compressi
Originally Posted by wdwalker
Originally Posted by N1ghtM0nkey
Get a compression test - if it turns out good - boost your car.
and about the diesel- thats why a lot of truck drivers leave their semi's running all night- diesels rely on detonation to burn the fuel, so they do shitty until the engine warms up (denser air is harder to ignite, thats the whole idea behind the intercooler on a fi car, to prevent it) also why turbo diesels make so much more power, the turbo does a great job of heating up all the air. its like the opposite of what otto-cycle engines want to do- instead of wanting colder denser air diesels make more power with hotter air.
It's true that the diesels use the pressure and heat to ignite the fuel, that works shitty when the engine is ice cold but the glow plugs take care of the cold starts. In only a matter of seconds it runs just as well as if it was warm.
Diesels benefit a lot from intercoolers, just like otto cycle engines. More dense air = more power. An intercooler also drops the exhaust gas temperatures, which in turn give room for more power.
An interesting difference between diesels and otto engines is the fact that the diesel doesn't care about air/fuel ratios. They run very lean under all conditions except full throttle. Lean burning there means less energy is produced and less heat. Rich burning is more energy produced and more heat. Most power is produced as the engine starts pouring out soot, but that's also where the exhaust temperature goes up. Run a diesel too rich and you will most likely melt something.
03-06-2005, 09:55 AM
#37
1.0 BAR
Join Date: Oct 2004
Posts: 273
Re: I need HELP!.."Ya cant put a turbo on yur car son, it has too much compression!"
Originally Posted by baldur
Bah, wrong again. I don't think you even know what detonation is when you claim that diesels run on it. Detonation is when the mixture ignites from more than one place at the same time and burns up all at once rather than completing the burn as the piston travels down the power stroke.
It's true that the diesels use the pressure and heat to ignite the fuel, that works shitty when the engine is ice cold but the glow plugs take care of the cold starts. In only a matter of seconds it runs just as well as if it was warm.
Diesels benefit a lot from intercoolers, just like otto cycle engines. More dense air = more power. An intercooler also drops the exhaust gas temperatures, which in turn give room for more power.
An interesting difference between diesels and otto engines is the fact that the diesel doesn't care about air/fuel ratios. They run very lean under all conditions except full throttle. Lean burning there means less energy is produced and less heat. Rich burning is more energy produced and more heat. Most power is produced as the engine starts pouring out soot, but that's also where the exhaust temperature goes up. Run a diesel too rich and you will most likely melt something.
It's true that the diesels use the pressure and heat to ignite the fuel, that works shitty when the engine is ice cold but the glow plugs take care of the cold starts. In only a matter of seconds it runs just as well as if it was warm.
Diesels benefit a lot from intercoolers, just like otto cycle engines. More dense air = more power. An intercooler also drops the exhaust gas temperatures, which in turn give room for more power.
An interesting difference between diesels and otto engines is the fact that the diesel doesn't care about air/fuel ratios. They run very lean under all conditions except full throttle. Lean burning there means less energy is produced and less heat. Rich burning is more energy produced and more heat. Most power is produced as the engine starts pouring out soot, but that's also where the exhaust temperature goes up. Run a diesel too rich and you will most likely melt something.
05-10-2005, 11:26 PM
#38
0.0 BAR
Join Date: Apr 2005
Posts: 23
Re: I need HELP!.."Ya cant put a turbo on yur car son, it has too much compression!"
alright.
like the guys from cb7tuner said, you are perfectly fine bossting that motor. i should know two of my close friends did it. i have a jdm f22b dohc motor with a 14b turbo currently boosting 10 psi on uberdat fuel management. luckily for you the f22a map is damn near perfect. i on the other hand along with midnite and a few others have been forced to do the hole tuning process based on what one lone brave soul (midnite) learned about the f22s.
ok f22 block=iron sleeves, but the piston rings are ----. i have run 10 psi on my f22b (9.1:1) since february, all while custom tuning my own maps. i'm about to step up to 12-14 psi in a week. i will do a compression test but the last time it was done it was 220 all the way across
boost it.
btw a friend of mine had 200k miles on his motor, and got blowby like a ****. be sure you have the means to put a new motor in or at least rebuild it when u blow it.
like the guys from cb7tuner said, you are perfectly fine bossting that motor. i should know two of my close friends did it. i have a jdm f22b dohc motor with a 14b turbo currently boosting 10 psi on uberdat fuel management. luckily for you the f22a map is damn near perfect. i on the other hand along with midnite and a few others have been forced to do the hole tuning process based on what one lone brave soul (midnite) learned about the f22s.
ok f22 block=iron sleeves, but the piston rings are ----. i have run 10 psi on my f22b (9.1:1) since february, all while custom tuning my own maps. i'm about to step up to 12-14 psi in a week. i will do a compression test but the last time it was done it was 220 all the way across
boost it.
btw a friend of mine had 200k miles on his motor, and got blowby like a ****. be sure you have the means to put a new motor in or at least rebuild it when u blow it.
05-11-2005, 12:08 AM
#39
0.5 BAR
Join Date: Feb 2004
Posts: 80
Re: I need HELP!.."Ya cant put a turbo on yur car son, it has too much compression!"
Originally Posted by midnite racer x
Running and f22a1 right now boosted at 10psi...you father has no idea what he's talking about. And the f22 has 8.8:1 compression not 9.5:1!!! Even so when i do get forged internals i'm not gonna lower the compression i'm gonna raise it to atleast 9.1:1
www.cb7tuner.com you have a lot of searching and reading to do man...so does your dad.
www.cb7tuner.com you have a lot of searching and reading to do man...so does your dad.
BASTARD!! i always like posting the link!!! Carlos 3 MRX 3 GRRR it shall continue
05-11-2005, 12:15 AM
#40
0.5 BAR
Join Date: Feb 2004
Posts: 80
Re: I need HELP!.."Ya cant put a turbo on yur car son, it has too much compression!"
Originally Posted by iamanonymous
i on the other hand along with midnite and a few others have been forced to do the hole tuning process based on what one lone brave soul (midnite) learned about the f22s.
