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turbocharged cars without intercoolers??

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dalatinromeo

15+ Year Contributor
889
26
Nov 18, 2004
Fair Lawn, New Jersey
ok about a week a ago me and a couple of friends were talking about cars. then my friend asked me when do i plan on getting a fmic, i told him not yet first i have to get all the other supporting mods; and that my smic will do good for now. he was like you have a smic? i was like yeah.

he was like your car comes with a stock IC? i was like yeah don't all turbocharged cars have to have an IC of some sort whether it be the smic or a fmic. He goes and says a supra doesn't come with a stock IC. I was like yeah it does a smic. He checks and goes oh yeah your right. Then he says not all turbocharged cars uses IC. All my friends and I start laughing.

But yesterday I was on vfaq. com. Reading the article on "NA vs turbo vs supercharger." They mention, "Turbocharged cars typically have a intercooler in between the turbo and the intake manifold." No I see my friend could have been right.

I was just curious what turbocharged cars run without IC. And if it doesn't have IC, does the hot air leaving the turbo go straight into the intake manifold or is it a different process. Sorry for the long post.
 
The motor for my Honda did not come from the factory with an IC (it did come from the factory turbocharged). Yes, the line goes straight from the turbo to the intake, the piping is about 10" long. The car runs around 11psi stock. The second iteration of my motor got an IC from the factory and got a 10hp bump.

I'm racking my brain trying to think of another example of no intercooler. Seems like most older turbo-diesels didn't have an IC either (basically all newer ones do).
 
Ya you will be hard pressed to find a newer car without an IC.

You can run without one but since there is less cooling you have to run less boost.
 
The 81-83 Nissan 280zx came without a factory intercooler. It ran about 5 psi of boost on the 2.8 liter inline 6. I believe it used a garret T3. It also came with no blow off valve. I'm not sure if the 300zx turbos came with intercoolers or not, but yeah, a few early cars did not have intercoolers.
 
Bino said:
The motor for my Honda did not come from the factory with an IC (it did come from the factory turbocharged).
What Honda is this?

Anyways. Intercoolers were a later addition to turbocharged cars, as early TC motors ran very little boost. And, the engineers were just afraid. My '84 200SX Turbo has no IC, and although there's a blowoff valve on the intake manifold, there isn't a BOV in the DSM sense- I don't think it's ever opened. I doubt it runs 5 psi. In the early eighties if you spoke of 15psi intake pressures, you'd be hauled away. My mom's Renault Fuego had an intercooler, but its boost levels were modest as well.

The amount of progress automotive technology has made over the last twenty years is probably equal to the sum of progress during its first 80.
 
punishercb said:
Yeah I'm curious too. I've never heard of a factory turbocharged honda. :confused:

Honda factory turbocharged two cars (not counting F1). There was the Honda Legend 2.5L V6 turbo and the Honda City Turbo. I have a motor from the latter. The City turbo is a 1.2L all aluminum powerplant. The non-intercooled version made 100hp at 11psi and the intercooled version made 110hp at 11psi. Just in case any of you are looking for a retarded little swap (what I'm doing). The engine and transaxle from a City turbo is a bolt-in for a 1973-1979 Honda Civic. They weighed 1700lbs fully optioned. www.cityturbo.com

North America did not officially receive any factory turbocharged Honda's.
 
Ahh, not released to America, that would be why I've never heard of it. Man, I'll bet that 1.2 would be a beast. What kind of performance could one expect from that? Even with a lil civic weighing 1700 lbs it's still gonna be a dog. ROFL
 
punishercb said:
Ahh, not released to America, that would be why I've never heard of it. Man, I'll bet that 1.2 would be a beast. What kind of performance could one expect from that? Even with a lil civic weighing 1700 lbs it's still gonna be a dog. ROFL

Just some quick math. The 1700lb car was the one with the cast iron block. The aluminum motor cars were around 1550lbs. So, you drop the intercooled 1.2L into a 1550lb car and you get: 14.1 lbs/hp. Say a GST weighs around 2900 lbs and makes 210hp, that's 13.9 lbs/hp. The difference isn't really that much. Especially when you can gut the Civic and easily hit below 1400lbs. There's a guy with a hillclimb car that weighs 1300lbs with a full cage. But, the Honda motor isn't quite as friendly to mod's, but the Mitsu doesn't get 30+mpg around town (so I've read).

Figured I'd throw it out there just for kicks. I know how much a lot of people hate the Honda's.
 
none of these came with factory IC's:

merkur XR4Ti
early 80's mustang 2.3 turbo
pontiac sunbird/grand am turbo
a good deal of the thunderbird turbocoupes (later versions had them)
early saab turbos (later versions had them)
chevy sprint (not absolutely sure)
 
didnt the dodge daytona iroc r/t's (the ones with lotus heads and all that good stuff, 224hp) from 92 and 93 have one also?
 
The Shelby Daytona's came intercooled, as mentioned before, it ran vertical next to the radiator. I had a '89 Daytona 2.5L Turbo, and it was not intercooled from the factory. I don't believe any of the late 80's early 90's Mopar 2.2L or 2.5L turbocharged models (Daytona, LeBaron, Shadow, etc.) were intercooled except for the Shelby models. But talk about a car that wasy to work on.... all kinds of room under the hood.
 
i remember when shelbys came out - they thought it was a big enough deal to acualy say "innercooled " on the hood. I think most of the turbo cars that had no i/c were the ones that were carberated
 
I had an 87' 300zx turbo and it did not have an intercooler of any kind. Those ol 16" rims that came factory on that car are now on my talon... LOL 245's
 
polarmoment said:
none of these came with factory IC's:

merkur XR4Ti
early 80's mustang 2.3 turbo
pontiac sunbird/grand am turbo
a good deal of the thunderbird turbocoupes (later versions had them)
early saab turbos (later versions had them)
chevy sprint (not absolutely sure)

I know at least some Sprints were factory intercooled. The Intercooler looked much more like a heater core (tiny), but it was there.
 
Bino said:
Honda factory turbocharged two cars (not counting F1). There was the Honda Legend 2.5L V6 turbo and the Honda City Turbo. I have a motor from the latter. The City turbo is a 1.2L all aluminum powerplant. The non-intercooled version made 100hp at 11psi and the intercooled version made 110hp at 11psi. Just in case any of you are looking for a retarded little swap (what I'm doing). The engine and transaxle from a City turbo is a bolt-in for a 1973-1979 Honda Civic. They weighed 1700lbs fully optioned. www.cityturbo.com

North America did not officially receive any factory turbocharged Honda's.

you forgot the 2.7l turbo v6 (used in legend coupe and rover 827 turbo) but that was years ago.


honda also has a 1.7l turbo diesel and a new 2.0 td ..but thats just me being a post whore
 
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