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audib5a4
02-15-2008, 02:01 PM
Technical Specs
Model: 1.8T 2.8
Engine/Engine Design
Type: Four cylinder inline, turbocharged, charge air intercooling V6 90 degree, gasoline
Bore: 3.18 in. (81 mm) 3.25 in. (82.5 mm)
Stroke: 3.40 in. (86.4 mm) 3.40 in. (86.4 mm)
Displacement: 1.8 liters - 107 cu. in. 2.8 liters - 169 cu. in.
Compression Ratio: 9.5:1 10.3:1
Horsepower (SAE Net): 150 @ 5700 RPM 172 @ 5500 RPM
Torque: 155 ft. lbs.@ 1750 RPM 184 ft. lbs.@ 3000 RPM
Cylinder block: Cast Iron
Crankshaft: Forged Steel, 4 main bearings
Cylinder head: Aluminum alloy
Valve Train: DOHC, belt driven, hydraulic lifters DOHC, belt driven, hydraulic lifters / variable intake valve timing and variable geometry composite intake manifold Firing Order: 1-3-4-2 1-4-3-6-2-5
Cooling System: Water-cooled, thermostatically controlled radiator fan
Fuel/Ignition System: Electronic multi-point sequential fuel injection, hot film air mass sensor, solid state direct ignition with multiple coils, dual knock sensors w/cylinder selective knock control and fully adaptive controls.
Emission System: Dual 3-way catalytic converters w/individual oxygen sensors
??? ANY ONE KNOW IF THIS IS TRUE LLOL

sixfiveoh
02-15-2008, 02:03 PM
VTEC isn't really anything special, it's just variable valve timing, tons of cars have it. They all just call it different things...

audib5a4
02-15-2008, 02:04 PM
Im Aware Of This Im Asking If This Is True To 1.8t And 2.8 Audis Never Knew This???
Im Aware Of Honda/toyota/lexus Etc But Never Knew The Audi

dualaudi
02-15-2008, 02:09 PM
yeah, but not sure what year it started.

audib5a4
02-15-2008, 02:10 PM
These Specs Ar 1997

maxspeed
02-15-2008, 02:23 PM
it the US it started in 2001 wit AWM motor, and if memory serves, it only functions at warm up to get the car up to speed faster...

audib5a4
02-15-2008, 02:29 PM
Us 2001 ?
These Are 1997 Specs But They Could Very Well Be Euro Specs

dingguhlbary
02-15-2008, 02:44 PM
they probably are. the only Us spec model with VVT is the 2001.

but i wouldnt think that the euro spec 1.8t would have vvt and the us ones wouldnt. its a weird thing to just exclude from the us ones, but then have it up again for 2001.

Ewok_Fetus
02-15-2008, 02:45 PM
Well, I am thinking... Correct my if I am wrong, but the 2001+ use a solenoid to control the valve timing and the older ones use oil pressure...

BrokeDown[20V]
02-15-2008, 04:09 PM
VTEC isn't really anything special, it's just variable valve timing, tons of cars have it. They all just call it different things...

Yes, that is true. It works differently in all cars. Its not exactly the same as Vtec.

keeganhartman
02-15-2008, 04:13 PM
i thought the 2.8 had vvt before 01 because of the sc guys mentioning something about it being a disadvantage

grip_racer
02-15-2008, 07:02 PM
VVT starts on 2001+ 1.8T's

It is for emissions purposes only. It does not add power. All it does is add valve overlap to draw exhaust gasses back into the cylinder for a more complete burn.

VTEC is a serious cam profile switchover, not just an advancement or retardation of the regular cam lobe. VTEC cams have two profiles, economy for lower revs, and a power switchover (more duration and lift) in the higher revs.

VTEC and VVT are 2 completely different systems with different objectives.

Stampy
02-15-2008, 07:04 PM
All I know is when my cams switch over at 5500......Watch out! Its just like my Euro R powered EG6. Seriously, I believe its just for emissions and such for 01+. Its not true Vtec, dear god I wish it was.

Stampy
02-15-2008, 07:06 PM
VVT starts on 2001+ 1.8T's

It is for emissions purposes only. It does not add power. All it does is add valve overlap to draw exhaust gasses back into the cylinder for a more complete burn.

VTEC is a serious cam profile switchover, not just an advancement or retardation of the regular cam lobe. VTEC cams have two profiles, economy for lower revs, and a power switchover (more duration and lift) in the higher revs.

VTEC and VVT are 2 completely different systems with different objectives.


Yepyep. Just like on the K20A3. It really only has VVT. Honda still calles it a Vtec motor. Most of the other K-series motors ( K20R, K20A2, K24A1, K24A4) have true Vtec. Other than the K24A3 which was found on the element and accord.

sixfiveoh
02-15-2008, 07:17 PM
Honda also called F22s and D17 single cam motors VTEC too...

grip_racer
02-15-2008, 07:18 PM
big up Stampy, EG6's are the tits.

@ sixfiveoh: honda has single-cam switchovers too. one of their D-series motors had a 3-stage single cam switch. super economy, regular, and power.

sixfiveoh
02-15-2008, 07:26 PM
I always heard that single cam vtec wasn't really true vtec, because of the lack of an "exhaust" cam. My 97 CL had "vtec" it sounded cool when it crossed over, but it didn't feel like it was really doing anything. My teg with a stock b18a pulled harder. Ahh, and now I must reminisce to the Honda days...

http://www.nbhq.net/hostees/joe/shots/pictures/Layla%20002.jpg

http://www.nbhq.net/hostees/joe/shots/pictures/teg%20015.jpg

speedydragon
02-15-2008, 08:16 PM
lol fwiw the vtec on a stock 3rd gen(?) prelude (the latest one) sucks!

sixfiveoh
02-15-2008, 08:23 PM
lol fwiw the vtec on a stock 3rd gen(?) (the latest one) sucks!

3rd gen? Are you talking about Civics? Because they're at 8th gen now lol...

speedydragon
02-15-2008, 08:24 PM
3rd gen? Are you talking about Civics? Because they're at 8th gen now lol...

fixed haha sorry

sixfiveoh
02-15-2008, 08:25 PM
The BB6? That would be a 5th gen [:p]

You gotta roll in my car next meet, btw. These H&Rs are freakin smooth, it's weird to me haha...

speedydragon
02-15-2008, 10:17 PM
The BB6? That would be a 5th gen [:p]

You gotta roll in my car next meet, btw. These H&Rs are freakin smooth, it's weird to me haha...

haha I'll be looking forward to the next meet then! :D Appreciate it much!

Stampy
02-15-2008, 11:37 PM
big up Stampy, EG6's are the tits.


Thanx man, and true that. Nothing like a fully built jellybean that fears NOTHING on the road. Thank god that Euro R tranny has an LSD. Otherwise I would get no grip through 2nd.

Bong Water
02-16-2008, 03:14 AM
Bit of a clear up regarding Hondas VTEC system

VTEC is just VVT, it is nothing special these days. Where you guys are missing the point is there are many different variants of VTEC

VTEC, nothing more than a Valvle Timing Electronically controlled system

VTEC-E, Economy VTEC, runs on 12V IIRC (economy mode) until 3K RPM or so and then switches to 16V, I think thats right, D15 engines

VTEC SOHC, A single over head cam switches between high and low profile ata certain RPM, D16 engines

VTEC DOHC, Tow cams one more aggresive than the other, the more aggresive cam comes into play at certain RPM, B and H series engines

Type-R VTEC, in the older cars, same as VTEC DOHC with more aggresive profiles and set up, B/H engines again. In the newer cars like the EP3/DC5 its now I-VTEC, same idea, K series engines


If anyone is really interested in VTEC then just look it up on Wikepedia, goes into a lot of detail, but the point is, a lot of people will say they have VTEC, when really its nothing special unless its controlling the CAM's. If its not then its nothing more than a standard VVT engine

I had 5 Honda Civics BTW [:p]

Stampy
02-16-2008, 08:40 AM
Some of the stuff in your post is right. I will give you that. Vtec is nothing special these days? Last time I checked the K-series is one of the most highly regarded motors in the world. It has true Vtec switch. The ONLY honda I know of that carries a VTEC motor that only had VVT was the USDM EP3 K20A3. All other variants of the K-series are true Vtec. I happen to have 3 EG6's. I'm pretty on the up and up with honduh.

sixfiveoh
02-16-2008, 09:34 AM
I happen to have 3 EG6's.

OMGZ HOW'D YOU IMPORT THEM?!

*cough* EH *cough* [:D]

biketsai
02-16-2008, 10:16 AM
did somebody say vtec?
http://i31.tinypic.com/2lmkj2d.jpg%5B/IMG%5D

ILoveT
02-16-2008, 10:58 AM
Lol this thread is fun!

My friend and I swapped a B16 into his car and we wanted to make sure everything was running ok. We didn't put his exhaust back on (pretty much stock) because we had to figure out how to attach it to his header. Anyways when we crossed over it sounded like an Indy car. It was absolutely hilarious. It actually scared me the first time we hit vtak.

devmaster
02-16-2008, 09:47 PM
did the vtac light com on? lols

K04B5
02-17-2008, 01:17 PM
If you think VTEC is nothing, take a ride in a S2000! VTEC kicks in above 6K and the engine sounds and pulls totally different. That is what true VTEC is in my mind. My brother has a S2000 sitting in storage for the winter right now, I should take it out and make some vids!!! [drive] haha

audib5a4
02-17-2008, 07:58 PM
haha lol i know of the diff vvt systems i just said vtec cuz ifind it funny/ i just didnt know that audis used vvt.

Beemer832
02-18-2008, 05:32 AM
Well, I am thinking... Correct my if I am wrong, but the 2001+ use a solenoid to control the valve timing and the older ones use oil pressure...

I think what you are thinking about is the cam chain tensioner. Older models are hydraulic newer ones have an electric solenoid. As far as I know this does not control the timing of the engine at all. It just tensions the chain between the intake and exhaust cams.

Never heard of VVT in an Audi, but this makes sense for any car trying to produce more power.

-josh

offroader1006
02-18-2008, 12:37 PM
VTEC DOHC, Tow cams one more aggresive than the other, the more aggresive cam comes into play at certain RPM, B and H series engines

so the second cam just waits idle and then slides over into action at a certain RPM?

nothing silly like one cam for intake valves, and one cam for exhaust valves?

thats funny shit. did you drink the bong water before you posted?

VVT and VTEC are not the same thing.