Bogging at clutch engagement 1500RPM+

S1MPSONS · 09-15-2005, 04:47 PM

I've been driving a stick for over 2 years. Ive had my STi for about 2 months. Over the past 2 weeks I have been getting a lot of bogging during clutch engagement. Even when the revs are over 1500. I don't understand. This usually never happens unless revs are under 1000 for me. Could there be something wrong with my car? Any suggestions or thoughts?

AndrewSS · 09-15-2005, 04:58 PM

hrmmmm a few times i got a bit of that i think, almost thought i was gonna stall the car... had to save it a few times, actually once i did stall it all of a sudden, it seemed like my clutch didnt hook up, almost like a fluke i think, it occured like 2 times, who knows maybe i was being dumb, but maybe its just something that can happen occasionally... maybe during the break in of all the drivetrain parts... i dunno

evilrazor · 09-15-2005, 05:23 PM

Do you normaly drive hard or like a grandma?

If I drive like a grandma for awhile my car start's do what you described But once I reset and drive her like she is ment it stops

S1MPSONS · 09-15-2005, 05:38 PM

My driving habits change dramatically every minute. Ill see if I can be consistent. Any other suggestions

AFSTIGUY · 09-15-2005, 07:04 PM

I am certainly no authority, after only having the car about 2 weeks now.

I will say this...at low RPMs, the clutch doesn't seem to catch like it did in my 350Z or S2K. I was out on a test drive, and was trying to drive very lightly (knowing that I was probably going to by the car, and didn't want to beat it up), and coming off the light on a downslope, I stalled. With the hill, that is almost impossible, because even letting off the break should have coasted me to a speed to prevent a stall. I have had a stick for about 8 years now, so I am no rookie.

Anyway, agree with the note about agressive driving. I have never felt a car so inclined to drive the way you want to drive it. I have tried a few 3000-4000 RPM starts (not dead drop, but hard feathering of the clutch), and the car LOVES it. The clutch in my Z would stick in if I did that.

My only advice to you would be to try and hold the clutch closer to the floor for just a bit longer, and as you get on the gas, SLOWLY feather the clutch out. It should stop the BOG!

Tortfeasor STi · 09-15-2005, 08:18 PM

When letting out the clutch, make sure you feed in a little more gas as you reach the friction point this will help avoid bogs. Generally the more powerfull the car, the more you have to finesse the clutch. Simply letting out the clutch at a given RPM will not work in all conditions. It is all about feel when it comes down to it. Or if you have you mind set on RPM try feeding in the clutch at 2000rpm if 1500rpm does not work. But do this only until you know what a propper launch feels like. As I said earlier, this is not the ideal technique.

jaylw314 · 09-15-2005, 08:59 PM

I don't have any problems starting the car at 1000 rpm. I normally do a very conservative "granny" start, like so:

1- clutch in
2- clutch slip, blip throttle, revs to 1000-1500 rpm
3- clutch out, throttle to idle, revs to 800-1000 rpm
4- open throttle, and go

It is certainly not the most elegant or impressive launch

Still, it saves gas and clutch, which are both good things driving around Los Angeles. Never had problems with the engine really bogging or sounding like it was going to stall, even with the clutch all the way out at 1000 rpm. The only problems I had were some bogging up between 2000-2500 rpm, but that only lasted for a couple days and then mysteriously stopped. I still don't have a good explanation for it.

S1MPSONS · 09-15-2005, 11:01 PM

I'll try to stay around 2K for now. Ive never been in a car that reacted to negetively to a <1000rpm engagement. I feel so bad when I bog it.

Note: Maybe this will help you guys diagnose. If I am not on the clutch, and im in 1st gear rolling around 800-1000rpm I DO NOT get any bogging. It only happens if I'm on the clutch (and even more if the front wheels arent pointed straight ahead).

***Digitalfiend*** · 09-16-2005, 12:43 PM

You just need to engage the clutch a bit slower and give more gas. Remember that the engine has to turn 4 wheels not just two like almost every other car, so there is initially more resistance. Personally, I was amazed at how easy this car is to get going from 1-1.5k rpm. Just slow down your clutch engagement a bit, as the revs drop, give it gas and let up even more. As I said, I probably average about 1.2k-1.3k when I start and no bogs.

mikeyg · 09-16-2005, 02:05 PM

I have experienced this also. I think it has to do with a combination of all the factors listed above. All wheel drive and powerful car. I generally have to concentrate on giving it more gas than I think I need after I initially feel fricition, otherwise if you are below 1000-1500, the car feels like it's gonna bog unless I give more gas. I guess its a nuance of this car. I have had others that drive other manuals notice this difference.

S1MPSONS · 09-16-2005, 09:40 PM

Ok , the AWD thing makes sense. Ive been giving it almost 2000rpms lately. been working great. No bogging. Sorry about posting such a stupid thread. I just wasnt used to a car the required so much to get it moving properly. So an consist 2000rpm engagement isnt risking premature clutch wear?

Tortfeasor STi · 09-16-2005, 09:46 PM

I know it is a cliche, but there are no stupid questions if you legitimately dont know the answer. And since the internet is relatively anonymous, you will get a lot less (poo) from you friends by asking the question here.

***Digitalfiend*** · 09-16-2005, 09:46 PM

I would aim for a little lower, like 1.2-1.5 but 2k is probably not a big deal.

Sinister Subaru · 09-16-2005, 11:55 PM

I find the clutch to be a "hit or miss" in my STi. I normally let out on the clutch, and while slipping out, give it some gas until the car starts moving at about 2000 rpms.

Once moving, I shift at about 3000 rpm. If I shift at 2000 rpm, it seems really jerky.

S1MPSONS · 09-17-2005, 06:14 PM

Quote:

Originally Posted by Sinister Subaru

I find the clutch to be a "hit or miss" in my STi. I normally let out on the clutch, and while slipping out, give it some gas until the car starts moving at about 2000 rpms.

Once moving, I shift at about 3000 rpm. If I shift at 2000 rpm, it seems really jerky.

Sinister subaru, Off topic. I see your sig says K&N and accessport port st1. How does it feel. Do you notice gains with just those 2 mods?

09-15-2005, 04:47 PM	#1
S1MPSONS Spec C Club Car: Wingless STi Stg II Fav Mod: Steering Rack Bushings, Rubber, and Camber Plates Location: NYC Posts: 1,393 IWSTI Addict since: Jun 2005 Trader Rating: (6)	Bogging at clutch engagement 1500RPM+ I've been driving a stick for over 2 years. Ive had my STi for about 2 months. Over the past 2 weeks I have been getting a lot of bogging during clutch engagement. Even when the revs are over 1500. I don't understand. This usually never happens unless revs are under 1000 for me. Could there be something wrong with my car? Any suggestions or thoughts? This ad is not endorsed by this member. Please register or login to hide this ad.

09-16-2005, 02:05 PM	#10
mikeyg Junior STI Driver Car: Rav 4 2wd Fav Mod: upholstry farts Location: Charlotte, NC Posts: 115 IWSTI Addict since: Jul 2005 Trader Rating: (2)	I know what you mean I have experienced this also. I think it has to do with a combination of all the factors listed above. All wheel drive and powerful car. I generally have to concentrate on giving it more gas than I think I need after I initially feel fricition, otherwise if you are below 1000-1500, the car feels like it's gonna bog unless I give more gas. I guess its a nuance of this car. I have had others that drive other manuals notice this difference.

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09-15-2005, 04:58 PM	#2
AndrewSS S204 Racer Car: 05 Subaru WRX STi Fav Mod: RCE T2 Coilovers Location: Columbus, OH Posts: 4,643 IWSTI Addict since: Jun 2005 Trader Rating: (21)	hrmmmm a few times i got a bit of that i think, almost thought i was gonna stall the car... had to save it a few times, actually once i did stall it all of a sudden, it seemed like my clutch didnt hook up, almost like a fluke i think, it occured like 2 times, who knows maybe i was being dumb, but maybe its just something that can happen occasionally... maybe during the break in of all the drivetrain parts... i dunno

09-15-2005, 05:23 PM	#3
evilrazor Spec C Club Car: 2005 WRB/G STi Fav Mod: AP Location: New Mexico Posts: 1,407 IWSTI Addict since: Apr 2004 Trader Rating: (0)	Do you normaly drive hard or like a grandma? If I drive like a grandma for awhile my car start's do what you described But once I reset and drive her like she is ment it stops

09-15-2005, 05:38 PM	#4
S1MPSONS Spec C Club Car: Wingless STi Stg II Fav Mod: Steering Rack Bushings, Rubber, and Camber Plates Location: NYC Posts: 1,393 IWSTI Addict since: Jun 2005 Trader Rating: (6)	My driving habits change dramatically every minute. Ill see if I can be consistent. Any other suggestions

09-15-2005, 07:04 PM	#5
AFSTIGUY Junior STI Driver Car: 06 Subaru WRX STi SGM Fav Mod: Coming Soon Posts: 90 IWSTI Addict since: Sep 2005 Trader Rating: (0)	I am certainly no authority, after only having the car about 2 weeks now. I will say this...at low RPMs, the clutch doesn't seem to catch like it did in my 350Z or S2K. I was out on a test drive, and was trying to drive very lightly (knowing that I was probably going to by the car, and didn't want to beat it up), and coming off the light on a downslope, I stalled. With the hill, that is almost impossible, because even letting off the break should have coasted me to a speed to prevent a stall. I have had a stick for about 8 years now, so I am no rookie. Anyway, agree with the note about agressive driving. I have never felt a car so inclined to drive the way you want to drive it. I have tried a few 3000-4000 RPM starts (not dead drop, but hard feathering of the clutch), and the car LOVES it. The clutch in my Z would stick in if I did that. My only advice to you would be to try and hold the clutch closer to the floor for just a bit longer, and as you get on the gas, SLOWLY feather the clutch out. It should stop the BOG!

09-15-2005, 08:18 PM	#6
Tortfeasor STi S204 Racer Car: '08 335xi Coupe Fav Mod: Dinan Reflash Location: Princeton, NJ Posts: 3,620 IWSTI Addict since: Aug 2005 Trader Rating: (0)	When letting out the clutch, make sure you feed in a little more gas as you reach the friction point this will help avoid bogs. Generally the more powerfull the car, the more you have to finesse the clutch. Simply letting out the clutch at a given RPM will not work in all conditions. It is all about feel when it comes down to it. Or if you have you mind set on RPM try feeding in the clutch at 2000rpm if 1500rpm does not work. But do this only until you know what a propper launch feels like. As I said earlier, this is not the ideal technique.

09-15-2005, 08:59 PM	#7
jaylw314 Junior STI Driver Posts: 144 IWSTI Addict since: Aug 2004 Trader Rating: (0)	I don't have any problems starting the car at 1000 rpm. I normally do a very conservative "granny" start, like so: 1- clutch in 2- clutch slip, blip throttle, revs to 1000-1500 rpm 3- clutch out, throttle to idle, revs to 800-1000 rpm 4- open throttle, and go It is certainly not the most elegant or impressive launch Still, it saves gas and clutch, which are both good things driving around Los Angeles. Never had problems with the engine really bogging or sounding like it was going to stall, even with the clutch all the way out at 1000 rpm. The only problems I had were some bogging up between 2000-2500 rpm, but that only lasted for a couple days and then mysteriously stopped. I still don't have a good explanation for it.

09-15-2005, 11:01 PM	#8
S1MPSONS Spec C Club Car: Wingless STi Stg II Fav Mod: Steering Rack Bushings, Rubber, and Camber Plates Location: NYC Posts: 1,393 IWSTI Addict since: Jun 2005 Trader Rating: (6)	I'll try to stay around 2K for now. Ive never been in a car that reacted to negetively to a <1000rpm engagement. I feel so bad when I bog it. Note: Maybe this will help you guys diagnose. If I am not on the clutch, and im in 1st gear rolling around 800-1000rpm I DO NOT get any bogging. It only happens if I'm on the clutch (and even more if the front wheels arent pointed straight ahead).

09-16-2005, 12:43 PM	#9
*Digitalfiend* Super Moderator Car: 08 DGM STI Fav Mod: My wife :) Location: Brooklin, Ontario Posts: 5,842 IWSTI Addict since: Oct 2003 Trader Rating: (0)	You just need to engage the clutch a bit slower and give more gas. Remember that the engine has to turn 4 wheels not just two like almost every other car, so there is initially more resistance. Personally, I was amazed at how easy this car is to get going from 1-1.5k rpm. Just slow down your clutch engagement a bit, as the revs drop, give it gas and let up even more. As I said, I probably average about 1.2k-1.3k when I start and no bogs.

09-16-2005, 09:40 PM	#11
S1MPSONS Spec C Club Car: Wingless STi Stg II Fav Mod: Steering Rack Bushings, Rubber, and Camber Plates Location: NYC Posts: 1,393 IWSTI Addict since: Jun 2005 Trader Rating: (6)	Ok , the AWD thing makes sense. Ive been giving it almost 2000rpms lately. been working great. No bogging. Sorry about posting such a stupid thread. I just wasnt used to a car the required so much to get it moving properly. So an consist 2000rpm engagement isnt risking premature clutch wear?

09-16-2005, 09:46 PM	#12
Tortfeasor STi S204 Racer Car: '08 335xi Coupe Fav Mod: Dinan Reflash Location: Princeton, NJ Posts: 3,620 IWSTI Addict since: Aug 2005 Trader Rating: (0)	I know it is a cliche, but there are no stupid questions if you legitimately dont know the answer. And since the internet is relatively anonymous, you will get a lot less (poo) from you friends by asking the question here.

09-16-2005, 11:55 PM	#14
Sinister Subaru Banned Car: '05 Subaru WRX STi Fav Mod: Any mod that enhances performance Location: Frederick, MD Posts: 937 IWSTI Addict since: May 2005 Trader Rating: (0)	I find the clutch to be a "hit or miss" in my STi. I normally let out on the clutch, and while slipping out, give it some gas until the car starts moving at about 2000 rpms. Once moving, I shift at about 3000 rpm. If I shift at 2000 rpm, it seems really jerky.