09-23-2020, 08:41 AM
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#5981
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Registered User
Join Date: Sep 2017
Location: SF Bay Area
Posts: 112
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Quote:
Originally Posted by Racer Boy
These cars make a rumbling sound right at 3,000 rpm, due to a resonance in the engine. Mine does it, but I only hear it while in the lower gears where the road noise is lower.
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After driving it a little more yesterday, the rumble may still be there, especially when I downshift to lower gears, it is noticeably less rumbling than before though.
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09-23-2020, 09:57 AM
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#5982
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Registered User
Join Date: Jul 2019
Location: Finland
Posts: 329
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Quote:
Originally Posted by Smallblock454
Do you mean the exhaust resonance at around 3.000 rpm or are there real vibrations somwhere in the cabin or stearing or somewhere else noticable?
What engine mounts did you use? The original Porsche front mounts have a new design. This mount might cause the problem with vibrations in my car. But my vibrations are in every rpm range.
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The rumble is evident especially when I lift the gas above 3000rpm for lowering the car speed - the at 3000rpm it shows up. Only very seldom it is so strong that I could call it a shaking, but it is not on the steering only. It's rather on the car body, so I'd expect it to came from engine since the speed of the car has nothing to do with it - happens with every gear at same rpm.
Ordered the engina mount from design911uk and it says on the receipt that " This product supersedes Porsche's old part numbers: 98737502304"
Transmission mounts are branded 'Rein' that has been commented to be a good choice on few of the Porsche forums I read.
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Boxster 2.7 2001 Manual
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09-23-2020, 11:13 AM
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#5983
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1997 Tip, 2018 Macan
Join Date: Aug 2015
Location: Upland, CA
Posts: 1,338
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Couple of thoughts; do you have a tire delaminating? tire out of balance? loose half shaft/bad bearing? when was your last four wheel alignment?
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09-23-2020, 12:40 PM
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#5984
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Registered User
Join Date: Jul 2019
Location: Finland
Posts: 329
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Quote:
Originally Posted by rexcramer
Couple of thoughts; do you have a tire delaminating? tire out of balance? loose half shaft/bad bearing? when was your last four wheel alignment?
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I doubt that this could be tire or driveshaft or bearing issue, since it shows up only at 3000rpm with all gears (different speeds, but not all the time on any speed).
Alignment was done last summer (no driving on the winther) and in my opinion the issue with bad alignment would show in all speeds or just one certain speed (for example 75 mph).
Mystery continues...
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Boxster 2.7 2001 Manual
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09-24-2020, 12:53 PM
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#5985
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Registered User
Join Date: Jul 2020
Posts: 77
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09-24-2020, 01:00 PM
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#5986
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Registered User
Join Date: Mar 2014
Location: So Cal
Posts: 299
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Quote:
Originally Posted by Racer Boy
These cars make a rumbling sound right at 3,000 rpm, due to a resonance in the engine. Mine does it, but I only hear it while in the lower gears where the road noise is lower.
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I want a rumble at anything above 3000rpm! If I don't get that growl or famous boxer motor rumble something is wrong.
The motor and exhaust noise is what makes these cars notoriously fun, stop worrying and just drive it!
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09-24-2020, 04:34 PM
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#5987
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Registered User
Join Date: Jan 2014
Location: New Jersey
Posts: 1,631
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Today I installed a SmartTop relay that I got a really great deal on a few months ago. It works like a charm!
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Current: 2022 718 Cayman GT4, PDK bone stock (the dark side).
Former: 2003 S, 3.6 LN Nickies, ARP rod bolts, under-drive pulley, Fabspeed sport headers, Softronic tune, 987 airbox 987 motor mount, Function-First Sport motor mount insert, Ben's short shifter, Nine8Six projector headlights & center caps, ROW M030, stainless flexible brake lines, B-K rollbar extension & fire extinguisher mount, hardtop
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09-25-2020, 12:43 PM
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#5988
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Registered User
Join Date: Mar 2007
Location: Ohio
Posts: 2,015
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Quote:
Originally Posted by Rayrevolver
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The stuff really gushes out don't it??
I don't suppose you've bought/tried this product yet? I would be a little concerned that the depth of the funnel wouldn't suffice to catch/corral that initial blast of oil when the plug first comes out.
I just took an empty plastic gallon milk jug and cut out the bottom. Flip it over and insert the jug opening (no cap!) into the hole in the middle of the oil collection unit. You have to learn how to aim a little when you go to pull the oil plug, but after the first time or two I hardly lose a drop anymore. I also drilled multiple 1/2" holes in the collection surface of the drain pan—to collect the oil that splashes out of the plastic jug (there's usually at least a little). And it's free!
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09-25-2020, 04:40 PM
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#5989
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Registered User
Join Date: Jul 2020
Posts: 77
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Quote:
Originally Posted by Frodo
The stuff really gushes out don't it??
I don't suppose you've bought/tried this product yet? I would be a little concerned that the depth of the funnel wouldn't suffice to catch/corral that initial blast of oil when the plug first comes out.
I just took an empty plastic gallon milk jug and cut out the bottom. Flip it over and insert the jug opening (no cap!) into the hole in the middle of the oil collection unit. You have to learn how to aim a little when you go to pull the oil plug, but after the first time or two I hardly lose a drop anymore. I also drilled multiple 1/2" holes in the collection surface of the drain pan—to collect the oil that splashes out of the plastic jug (there's usually at least a little). And it's free!
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Not yet purchased.
I also have a West Marine oil extractor (6.9 qt) and thought about sucking out a majority of the oil the next go around before I pull the plug.
I do like the milk jug trick and its priced right.
I am only about 1100 miles on this oil, so I have no idea when I will hit 3k and do another change. Maybe in the mean time another member can be our guinea pig and try this thing out???
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09-25-2020, 06:05 PM
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#5990
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Registered User
Join Date: Jul 2019
Location: Charleston
Posts: 513
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Why don't you guys just put the oil catch can on a cinder block?
I mean I know lots of you guys on here are engineers, but sometimes you don't need a special tool to raise your oil catch can up 6 inchs.
__________________
'99 supercharged 4.3 chevy Boxsterado
'98 PP13B powered thing
WTB: any cheap 986 shifter new or used
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09-25-2020, 07:24 PM
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#5991
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Registered User
Join Date: Mar 2007
Location: Ohio
Posts: 2,015
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Quote:
Originally Posted by Qingdao
Why don't you guys just put the oil catch can on a cinder block?
I mean I know lots of you guys on here are engineers, but sometimes you don't need a special tool to raise your oil catch can up 6 inchs.
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Well, two problems with that. One, with the way the oil (9 qts!) comes gushing out when the plug is first pulled, having the catch pan close isn't necessarily enough. You have to be able to surround the flow, to contain it. That's where the milk jug has worked great for me. (At roughly a full gallon, it holds almost 1/2 the entire contents of the oil pan.)
Secondly, by elevating the catch pan enough to do any good you eliminate your working space. There's not enough of a gap to easily reach and remove the drain plug. That's my theory anyway...and I'm sticking with it
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09-26-2020, 12:23 PM
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#5992
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Registered User
Join Date: Mar 2018
Location: Fort Langley
Posts: 253
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Drove it home from the airport. Was parked there for a week while I was in the Yukon for work. Aaaaaaaaand, the window dropped 1/2 way down and would not roll up.
It has never worked since I bought it, except the 1/2" drop when I lift the door handle (both inside and outside). It does not drop when I use the roof and they dont roll down when I use the console switches. Before you ask, yes, my CLU is messed up and I need to get that fixed. It's on the list!
But having it drop makes me think there are signs of life? Perhaps the switch operation is not tried to the CLU as I originally thought. Maybe I need to look into something else........more fun ahead.
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98 Boxster - Ocean Blue metallic. Bringing it back to life and having fun doing it!
20 Harley Streetbob -
Last edited by Zzorro; 09-26-2020 at 12:27 PM.
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09-26-2020, 12:36 PM
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#5993
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Registered User
Join Date: Jul 2019
Location: Finland
Posts: 329
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Quote:
Originally Posted by Zzorro
Drove it home from the airport. Was parked there for a week while I was in the Yukon for work. Aaaaaaaaand, the window dropped 1/2 way down and would not roll up.
It has never worked since I bought it, except the 1/2" drop when I lift the door handle (both inside and outside). It does not drop when I use the roof and they dont roll down when I use the console switches. Before you ask, yes, my CLU is messed up and I need to get that fixed. It's on the list!
But having it drop makes me think there are signs of life? Perhaps the switch operation is not tried to the CLU as I originally thought. Maybe I need to look into something else........more fun ahead.
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I had some issue on my right side door window and lock. The problem was that with previous owner there had had some access of water in to the doorway and water had also somehow entered in to the 9-pin wireing harness connector that connects to the door latch. I opened the connector, cleaned all contact pins with electronic cleaner, let it dry real well and put it back together - did not need to open the latch mechanism. All window problems has been gone now roughly 3 months - regardless of some major rain storm weather driving (Boxster is my daily driver during summer).
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Boxster 2.7 2001 Manual
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09-26-2020, 12:44 PM
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#5994
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Registered User
Join Date: Jul 2019
Location: Finland
Posts: 329
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Did the oil and filter change - filter is still super clean😎
While changing the oli, I did change also the Oil Pressure Relief Valve to the updated version from Porsche.
The short rattle at the start up is pretty much all gone now and can be heard only fraction of the time compared to the before the OPRV change. The updated part has different shape piston and slightly longer spring. This should help on keeping the oil pressure bit higher also on low rpm. Also I feel that the engine runs better and is a bit more responsive.
Old piston was slightly worn one side at the bottom skirt and also from top on same side. Parts cost was 25€, took addittional 10 minutes time to change while changing oil and what I can see from today's experience, it was money well spent 👌
On photos, first is the old OPRV, second is the new OPRV and lastly the filter cut open :dance:
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Boxster 2.7 2001 Manual
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09-26-2020, 01:19 PM
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#5995
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Motorist & Coffee Drinker
Join Date: Jul 2014
Location: Oklahoma
Posts: 3,840
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We put a blue frunk lid and some white duct tape on 'Red', then drove around town with a bunch of strangers honking the horn. It was fun.
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I am not an attorney, mechanic, or member of the clergy. Following any advice given in my posts is done at your own peril.
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09-26-2020, 01:49 PM
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#5996
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Registered User
Join Date: Apr 2017
Location: Indiana
Posts: 1,506
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Quote:
Originally Posted by 78F350
We put a blue frunk lid and some white duct tape on 'Red', then drove around town with a bunch of strangers honking the horn. It was fun.
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😁
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09-26-2020, 02:50 PM
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#5997
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Registered User
Join Date: Jul 2019
Location: Charleston
Posts: 513
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Quote:
Originally Posted by 78F350
We put a blue frunk lid and some white duct tape on 'Red', then drove around town with a bunch of strangers honking the horn. It was fun.
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Thats the paint scheme I shoulda gone with.... My 4.3 woulda been right at home in it.
Love it even if its got a boxer engine.
__________________
'99 supercharged 4.3 chevy Boxsterado
'98 PP13B powered thing
WTB: any cheap 986 shifter new or used
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09-27-2020, 06:55 AM
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#5998
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Registered User
Join Date: Jan 2019
Location: PA
Posts: 1,565
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Quote:
Originally Posted by 78F350
We put a blue frunk lid and some white duct tape on 'Red', then drove around town with a bunch of strangers honking the horn. It was fun.
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Love the car, not the bumper stickers and flags...
But hey, it's a free country and you're entitled to your own cultive mentality!
__________________
2002 Boxster Base - Arctic Silver - Tiptronic
2010 Subaru Forester
1980 Ford C-8000 Custom Cab Emergency-One Fire Truck
__________________
"I never lose. I either win or I learn." -Nelson Mandela
Last edited by piper6909; 09-27-2020 at 07:45 AM.
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09-27-2020, 01:34 PM
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#5999
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Registered User
Join Date: Jan 2019
Location: PA
Posts: 1,565
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__________________
2002 Boxster Base - Arctic Silver - Tiptronic
2010 Subaru Forester
1980 Ford C-8000 Custom Cab Emergency-One Fire Truck
__________________
"I never lose. I either win or I learn." -Nelson Mandela
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09-29-2020, 04:11 PM
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#6000
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1998 Boxster Silver/Red
Join Date: Sep 2017
Location: 92262
Posts: 3,034
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Just completed wiring up the turn signal/side marker mod. :dance:
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1998 Porsche Boxster
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