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Joined: Jan 2004
Posts: 233
drivethru1986
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drivethru1986 Nov 19, 9:00pm - #330759 

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2004 Toyota Celica

Joined: Jan 2004
Posts: 233
jersey
does compression have anything to do with turbo?

OK...this kid in my school who thinks hes the shit about cars...and who I admit knows more then me (im still really new at this stuff) says that compression has nothing to do with a turbo...is this true or not?
Joined: Jun 2002
Posts: 497
RedSunCelica
FWD
RedSunCelica Nov 19, 9:02pm - #330760 

FWD
1995 Toyota Celica

Joined: Jun 2002
Posts: 497
San Diego CA
compression has everything to do with a turbo. the lower the compression the more boost. the higer the compression the less amounts of boost.

notice the 7th gen GTS celicas high compression only way to turbo/supercharge it is to lower the compression a bit to be able to boost a little. but then again there have been a few people that have turboed high compressions motors and are able to boost but the engine will wear down quicker.

most of the turbo cars youll see on the road there compressions range from 8 to 1 - 9 to 1 compression. so yeah compression does make a difference.
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Posts: 233
drivethru1986
Member
drivethru1986 Nov 19, 9:08pm - #330761 

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2004 Toyota Celica

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Posts: 233
jersey
cool thumbsup...now i know

2004 AUTO GT-S............

"I may go slow.....but i look fucking good doing it...."
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Posts: 982
Kim
GOD
Kim Nov 19, 9:27pm - #330762 
2002 Red Toyota Celica GT
GOD
2002 Toyota Celica GT

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Posts: 982
Bellflower, CA
wow that kid is pretty dumb for being in school, damn public school systems !!! angry

"will someone please think if the children!"

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Posts: 233
drivethru1986
Member
drivethru1986 Nov 19, 9:55pm - #330763 

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2004 Toyota Celica

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Posts: 233
jersey
its private catholic school...but he does go to vocation school 2 be a mechanic...sad really...

2004 AUTO GT-S............

"I may go slow.....but i look fucking good doing it...."
Joined: Jun 2004
Posts: 908
GT2111
Senior Member
GT2111 Nov 19, 10:51pm - #330764 
2004 Red Toyota Celica GT
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2004 Toyota Celica GT

Joined: Jun 2004
Posts: 908
Originally Posted by RedSunCelica
compression has everything to do with a turbo. the lower the compression the more boost. the higer the compression the less amounts of boost.

notice the 7th gen GTS celicas high compression only way to turbo/supercharge it is to lower the compression a bit to be able to boost a little. but then again there have been a few people that have turboed high compressions motors and are able to boost but the engine will wear down quicker.

most of the turbo cars youll see on the road there compressions range from 8 to 1 - 9 to 1 compression. so yeah compression does make a difference.



Thata boy! thumbsup
Joined: Jul 2004
Posts: 32
c2til
Member
c2til Nov 19, 11:47pm - #330765 

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1991 Toyota MR2 Turbo

Joined: Jul 2004
Posts: 32
Budapest, Hungary
Regular turbo engines has compression from 8:1 to 9:1
Regular street engines used to be in the 9's, and high performance and racing N/A engines hit 10, and 11:1

The lower the compression the easier job you got turbocharging it, you can use lower rated fuel, less safety devices, ect.. The low to mid responds will suffer, but usually turbo freaks just don't care and add more BOOOOST...nothing meets the rush of a well made turbo system.

Regards,
c2til
www.c2power.com
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GT2111
Senior Member
GT2111 Nov 20, 12:36am - #330766 
2004 Red Toyota Celica GT
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2004 Toyota Celica GT

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Right On Til! thumbsup
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silver
Specialist
silver Nov 20, 1:54am - #330767 
2000 Silver Toyota Celica GT
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2000 Toyota Celica GT

Joined: Aug 2003
Posts: 1,251
California
There's this thing called static compression (or something like that) which is the total ratio once you factor in boost and piston compression.

In other words:

NA Car runs 11.5:1 pistons and the total CR is 11.5:1.
Turbo car runs 9:1 pistons and 15 psi and the total CR is the same as the aforementioned NA car.
(Numbers aren't exact, they're just made up examples).
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Posts: 1,547
sbocaj55
Specialist
sbocaj55 Nov 20, 6:25pm - #330768 

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2000 Toyota Celica

Joined: Aug 2004
Posts: 1,547
Pennsylvania
Yeah the GTS is 11.5:1 so with stock internals you can run ~6psi before having to beef em up(replace with lower compression pistons).

GT is 10:1 so you can run more boost...(not sure how much you guys run)

So you CAN turbo a high compression engine but you just can't run as much boost...
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Posts: 1,154
Larry_GTS
Specialist
Larry_GTS Nov 20, 7:03pm - #330769 
2003 Yellow/Red Toyota Celica
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2003 Toyota Celica

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Posts: 1,154
Texas
on the C2 kit, for the GTS it looks like the filter is located where it would be if you have a CAI . Why is that ?
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Posts: 1,547
sbocaj55
Specialist
sbocaj55 Nov 20, 7:45pm - #330770 

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2000 Toyota Celica

Joined: Aug 2004
Posts: 1,547
Pennsylvania
Someone who has the kit correct me if i'm wrong...

I think it's there and curves back down to the turbo because there is actually pretty decent airflow at that location because of that upper grill on the celi's.
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Posts: 1,154
Larry_GTS
Specialist
Larry_GTS Nov 20, 7:52pm - #330771 
2003 Yellow/Red Toyota Celica
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2003 Toyota Celica

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Texas
I would be scared , a turbo that cost me over 3Gs and its filter is that low... it would make me nervous.
Joined: Mar 2004
Posts: 329
AznKhaos
Member
AznKhaos Nov 21, 2:31am - #330772 
2003 Spectra Mica Blue Toyota Celica GT
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2003 Toyota Celica GT

Joined: Mar 2004
Posts: 329
Central California
how much psi can a gt have??w/out beefing up internals?

it doesnt matter wat u drive or who u driving against its all about how you drive
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GT2111
Senior Member
GT2111 Nov 21, 6:30am - #330773 
2004 Red Toyota Celica GT
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2004 Toyota Celica GT

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Posts: 908
6psi SAFELY.. but i've heard of 8psi as daily driver.. Depends on how you drive.
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Posts: 1,612
eric_h
2low2slow
eric_h Nov 21, 7:29am - #330774 

2low2slow
2002 Toyota Celica GT

Joined: Jan 2004
Posts: 1,612
St.George, UT
Wow, a kid who claims to know about cars and doesn't think compression has anything to do with a turbo OBVIOUSLY doesn't know what a turbos purpose is, boost more air into cylinder so you can add more fuel = more compression = more power. Why does a turbo car take premium gas? Because the compression gets so high it might prematurely ignite regular fuel. do that to a car with naturally high compression and you got yourself some problems. Go ahead show him this site http://auto.howstuffworks.com/turbo.htm and the thread. ohboy

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A boats a boat, but the mystery box could be anything....Even a boat!
Joined: Oct 2003
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Clos
Specialist
Clos Nov 21, 7:32am - #330775 
2000 Spectra Blue Toyota Celica
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2000 Toyota Celica

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Posts: 3,038
Alexandria, VA
sigh i wish i had a turbo cry
Joined: Sep 2004
Posts: 756
FastCelicaGT22
Senior Member
FastCelicaGT22 Nov 21, 10:24am - #330776 

Senior Member
2000 Toyota Celica GT

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Posts: 756
Columbus, Ohio
tell him his breath smells like another man shit in it

"If your not the lead Dog the View never Changes"
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Posts: 264
GT4
Member
GT4 Nov 22, 7:04am - #330777 

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1993 Toyota Celica Alltrac

Joined: Jun 2004
Posts: 264
Boston
Compression ratio (CR) ---> what they said above.
There is another "compression" that refers to "cylinder compression" The value (normally in psi) is obtained by performing "compression check" It indicates how healthy of the cylinder, piston ring, and how much carbon built up in the cylinder. Different engines (turbo or not) have different acceptable ranges. This compression value has nothing to do with the turbo and very useful when buying a used engine or used car.

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Boston
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celicadragon
Specialist
celicadragon Nov 22, 4:27pm - #330778 

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2002 Toyota Celica

Joined: Jun 2004
Posts: 1,337
Pittsburgh, PA
yep

respect the gt-s
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