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Post by precisionboost on Oct 15, 2006 22:48:44 GMT -5
ok ok aside from getting forum raped, specifically for you guys that like to just poke at my post for every single little detail, looking for the slightest flaw in the way i sentenced. i was talking about the AMERICAN 2.2 ECOTEC found in most cobalts, cavaliers and every other 4 cyl gm car. and i dont believe the aveo had a getrag transmission, 1st of all it would say in the brochure and 2nd of all the gears would be PRECICELY synchronized,even reverse  Here I thought I was being polite  .... trust me.... usually I'm not.... but you seem to have some slight knowledge about the American ECOTEC and I was in a good mood... ( I tend to "go off" on people when they say things like "i know for a fact that the etec II is no way related to the ecotec " ) I have no problems with people giving an OPINION but I do have a problem with people stating a FACT. What I'm saying is.... if you had said " I'm pretty sure the Aveo engine is not related to the Ecotec" I would politely correct you and push a half page of technical information your way so that you can judge for yourself. If you say " it is not............ " then your stating a fact and I will very quickly point out that your dead wrong and call you an idiot or something along those lines. Back to the issue......... I have plenty of experience with the F16/D20.... and it is absolutely without a doubt a Getrag transmission... that is a fact... but keep in mind the F16/D20 is a 20 year old design.... it's been the tranny of choice for the Opel Astra since the mid 80's As well.... the D20 isn't made in any of the european Opel plants... it's made in Korea.... so it's possible that the quality control is not as good as the common F16 The tranny you have is the "new generation" of Getrag transmissions.... the F23 (cobalt).... and there is also the F35 (saab 9-3) and F40 (saab 9-3, G6). The older Getrags used in the Opels were known to be notchy... especially the 6spd F28 everyone uses in their high power 2.0L turbo conversions. Some even say the F28 shifts like a diesel truck tranny.... where as the new F40 is a briliantly smooth upgrade that leaves the F28 in the dust. You simply had a lemon..... the Lanos guys haven't had all that much trouble with the D16. If your getting these kinds of problems on two transmissions it's more likely that the linkage is slightly bent .... the F16 is tempermental when it comes to linkage.... it will pop out of gear and or grind gears if the linkage is not perfectly aligned ( linkage is made of the components that connect your shifter to the tranny) I'd guess it was an assembly issue in the Korean GM_DAT plant and the mechanic at your dealership didn't pick up on the linkage issues. |
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Nemasys
Nitrous User
Speed kills, but you get there faster!
Posts: 953
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Post by Nemasys on Oct 16, 2006 7:57:51 GMT -5
OMG! Chris! thank you! thank you! thank you!
LOL that statement you said about the linkage if its slightly bent it will grind gears.. thats what my car is doing. After you said that it makes alot of sense, ill get it checked!
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Post by khan4rtist on Oct 16, 2006 8:37:25 GMT -5
i stand corrected, too bad i cant get my shift linkage checked under warranty because its a used one. cause mine grinds too
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Post by jasoto on Oct 16, 2006 21:04:53 GMT -5
I consider my 2005 Aveo's manual tranny totally adequate. I prefer it to my 2006's slushbox. And of course better than any Cavalier's/
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Post by precisionboost on Oct 16, 2006 21:37:09 GMT -5
I'm not saying that it's your problem.... it's just something that needs to be checked.
If your thinking it's syncro rings you simply need to double clutch to find out if that is the problem.
I double clutched my 83 Toyota Celica GTS for nearly a year.
Basicly.... if you have no syncros (or they are damaged) you need to match the transmission and engine RPM inbetween shifts.
At first it will seem clumsy and take a little bit to get use to.... but after a while you will learn to do it very quickly
What you do is.....
1) push in clutch pedal
2) remove shifter from gear #1 and place it in neutral
3) let go of clutch pedal
4) push in clutch pedal
5) shift from neutral to gear #2
6) let clutch out
Basicly.... step 2 &3 engages the transmission at the engine speed.... which allows the gearset to mesh without grinding.
If you double clutch and it still grinds.... it's not the syncros.... it's probably something else such as warped/damaged shift linkage.
If the grinding goes away as soon as you double clutch..... then your screwed because it has a bad syncro..... but.... if you double clutch the gearbox will last forever.
Basicly on the F16/D16 there are two actions..... the gearselect shaft is pulled up and down and rotated right and left.
Unlike a cable driven system it's hard to setup just right.... mechanical linkage sucks sometimes..... especially if it's sloppy like the F16
The mechanical short shifter (replaces part of the linkage) makes the tranny feel less sloppy... it tightens it up very nicely.
The 360 Dynamics short shifter was my design..... I built the first one and then Tom coppied it and had a machine shop cut all the pieces.
I even made my own shift knob.... out of solid steel !!!! The shucksed thing weighed a ton.
I still have the original short shifter in my Lemans.... which also has the mechanical linkage short shifter.... it's way too stiff now and hard to find the gears because they are so close together.
I'm probably going to put a stock sized shifter back into the Lemans to see how it feels.
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Nemasys
Nitrous User
Speed kills, but you get there faster!
Posts: 953
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Post by Nemasys on Oct 17, 2006 7:32:01 GMT -5
Ill try to double clutch too see if it still grinds 3rd gear, it doesnt do it everytime though, if i shift from 2nd at 6000rpm slowly then it grinds, if i do it fast, almost to the point of slamming 3rd, it doesnt do it and goes in very well. Anyways ill try that double clutch thing.
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Post by khan4rtist on Oct 17, 2006 8:55:50 GMT -5
mine doesnt grind too much, but it is noticable to the driver, since you can feel a grind through the shifter, i get the same thing, around 6k rpm and i shift into 3rd, and it grinds slightly, guess i better get used to double clutching......
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Post by hondachevy on Nov 11, 2006 22:08:11 GMT -5
lol... i belive Chris over this kid saying that the Aluminum 2.2L Ecotech is the best swap for these cars... if anything i would do what Sam is trying to do and go cross platform and put a honda motor in...No Offense Chris. but I think Honda has some of the best motors out there.. but that agian is just my opinion.
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Post by AveoSam on Nov 11, 2006 22:33:08 GMT -5
im not putting the honda engine im going to build into an aveo....that is saved for something better..an MR-S...and theres only one specific honda engine that I like which is the k24 frank....putting a honda engine in there is just as bad as a cobalt motor...if i were to swap anything into my aveo its would be a u20sed from the forenza because it would be easy and work since its compatible....
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Post by precisionboost on Nov 17, 2006 1:00:27 GMT -5
Screw the U20SED...... be bold.... get a Z20LEH from the Astra VXR.... 240bhp right out of the box
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Post by AveoSam on Nov 17, 2006 9:14:20 GMT -5
Screw the U20SED...... be bold.... get a Z20LEH from the Astra VXR.... 240bhp right out of the box is the astra vrx ever going to come to the US? i was just saying u20sed because its very cheap and easier to find...how much do the z20leh's cost? what ever happen to that c20get swap with the custom suspension? |
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Here I thought I was being polite 
.... trust me.... usually I'm not.... but you seem to have some slight knowledge about the American ECOTEC and I was in a good mood... ( I tend to "go off" on people when they say things like "i know for a fact that the etec II is no way related to the ecotec " )
