no timing marks... now what?, another day... another question from me. |
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no timing marks... now what?, another day... another question from me. |
slackin' at work |
Nov 28 2007, 08:53 AM
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#1
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i should be working Group: Members Posts: 265 Joined: 12-October 07 From: charlottesville, va Member No.: 8,215 Region Association: MidAtlantic Region |
well, last night I pulled my crappy 009 (what a piece of poo) and installed my
newly aquired stock distributor (thanks toon1!). plopped in the pertonix and threw that baby in. went to time it. no marks on the fan. why would they do this?? Ive been doing vws for a long while so I was able to time it by ear and test drive it. I know this is not good, so need to find out the timing marks. side note: the original distributor rocks and stopped the awful 009 mid-throttle hesitation. anyway, I know how to get TDC, but how do I determine other degrees? knowing TDC is only part of the equation and doesn't help me determine total advance, etc. any hints from the gurus? thanks! (IMG:style_emoticons/default/beerchug.gif) |
Bartlett 914 |
Nov 28 2007, 09:43 AM
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#2
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Advanced Member Group: Members Posts: 2,216 Joined: 30-August 05 From: South Elgin IL Member No.: 4,707 Region Association: Upper MidWest |
Do you have a Haynes manual? The dimensions for the marks are in the book.
I am sure the fan has marks on it. It may be for the wrong engine (1.8 vs 2.0). The marks for the 2.0 had TDC and 27 degrees. The 1.8 has TDC and another (7.5 degrees I think). The mark is close to the engine side and can be very hard to see sometimes. On my 1.8 I couldn't find it either. I have since pulled the motor. The mark was there. TDC is marked with a 0. 7.5 is black and 27 should be red IIRC |
Jake Raby |
Nov 28 2007, 09:43 AM
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#3
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Engine Surgeon Group: Members Posts: 9,394 Joined: 31-August 03 From: Lost Member No.: 1,095 Region Association: South East States |
That fan came from a VW Bus engine. These didn't have timing marks on the OD of the fan impeller, they were on the belt flange due to the difference in the blower housings between the two (The bus doesn't have a hole in top of the housing it uses a timing scale bolted to the front of the housing....
Total advance can be found with an advance timing light... This way you can set advance based off the TDC mark only. |
SLITS |
Nov 28 2007, 09:44 AM
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#4
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"This Utah shit is HARSH!" Group: Benefactors Posts: 13,602 Joined: 22-February 04 From: SoCal Mountains ... Member No.: 1,696 Region Association: None |
Well, if you can find TDC and own a HAYNES manual .... you can figure it out yourself. It even has pictures.
27 degress BTDC is 52.5 mm to the right of the TDC mark. And if you look at the picture you can determine which blade the 27 degree mark should be on. Page 30, Fig. 1.25 |
purple |
Nov 28 2007, 09:49 AM
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#5
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Pigeon feeders attract me Group: Members Posts: 938 Joined: 24-July 07 From: Houston, TX Member No.: 7,942 Region Association: None |
wow, this sounds like I could have written it a couple months ago
okay. First, the easiest way: jack up one side of your car, leaving the other rear tire on the ground. put the car in 5th gear pull the spark plugs push back your rear engine tin so you can see the inspection port on top of the transmission turn the wheel backwards note the big hashmark in the flywheel make sure this hashmark is at the top perfectly mark this point on the UNDER side of the flywheel for valve adjustments later install distributor. yada yada the less easy way. do all the steps described up to and including pulling the spark plugs wrap a towel around the bale holding on the drivers side valve cover tug the hell out of this towel and get the bale off pull off the valve cover rotate the wheel backwards until both valves on cylinder #1 are closed (the one closest to the back) push back the engine tin and note the flywheel hashmark mark this on the bottom of the flywheel and also on the fan impeller print out the timing diagram from pelican make your timing marks reassemble yada yada edit: I'm dumb and cant read a post pelican has a nice template you can print out and affix to your fan impeller and you paint the marks on that way then you can use a cheapy timing light for 40 bux and time to that. i'll leave the text for those searching on how to find TDC in the future |
Dave_Darling |
Nov 28 2007, 09:53 AM
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#6
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914 Idiot Group: Members Posts: 14,991 Joined: 9-January 03 From: Silicon Valley / Kailua-Kona Member No.: 121 Region Association: Northern California |
There's also a template you can use to mark your fan in one of the Tech Articles on the Pelican site.
--DD |
slackin' at work |
Nov 28 2007, 12:36 PM
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#7
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i should be working Group: Members Posts: 265 Joined: 12-October 07 From: charlottesville, va Member No.: 8,215 Region Association: MidAtlantic Region |
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type47 |
Nov 28 2007, 05:48 PM
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#8
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Viermeister Group: Members Posts: 4,254 Joined: 7-August 03 From: Vienna, VA Member No.: 994 Region Association: MidAtlantic Region |
OK, i'll bite..... my input is to see if your fan DOES really have timing marks (or not, this could verify Jakes statement that the fan is a bus motor fan)
jack up the car leaving one wheel on the ground and remove spark plugs. observe top of fan thru timing hole. have someone turn over engine by turning elevated wheel (in gear of course). go slow and use a flashlight to make sure there really are no marks. go 'round a couple of times to make sure. the reason i say this is from personal experience (IMG:style_emoticons/default/dry.gif) of starting a "new" engine and it ran having set the timing statically, but when we tried to use a timing light, we could not find the timing marks and i knew i had a 2.0L motor fan since i "rebuilt" the motor. my error was installing the distributor drive gear with the 12 degree angle to the case seam at a 12 degree angle in the wrong direction. (see Haynes in reference to installing dizzy drive gear and maybe this will make more sense). once we, actually norustscott found it, realized my error and removed the gear and installed correctly, no problem. it drove me nuts trying to figure out why we couldn't see the timing marks. we turned the engine over and saw them on the fan but not when trying to time the car... |
benalishhero |
Nov 28 2007, 06:03 PM
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#9
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Member Group: Members Posts: 313 Joined: 28-November 07 From: Portland, Maine Member No.: 8,384 Region Association: North East States |
This pict may helps
Attached image(s) |
buck toenges |
Nov 28 2007, 06:56 PM
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#10
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Senior Member Group: Members Posts: 553 Joined: 25-November 03 From: Fort wayne In Member No.: 1,388 Region Association: None |
How do you push back the rear engine tin? I am not sure how to do this?
Thanks, Buck |
orange914 |
Nov 28 2007, 08:27 PM
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#11
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http://5starmediaworks.com/index.html Group: Members Posts: 3,371 Joined: 26-March 05 From: Ceres, California Member No.: 3,818 Region Association: Northern California |
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Brando |
Nov 28 2007, 09:07 PM
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#12
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BUY MY SPARE KIDNEY!!! Group: Members Posts: 3,935 Joined: 29-August 04 From: Santa Ana, CA Member No.: 2,648 Region Association: Southern California |
There's teh TDC mark on the flywheel. On the backside of the engine you'll see an piece of tin that isn't screwed down on the top, it hooks over. Grab a long flat-blade screwdriver, pry it back. use a flashlight while doing turning the engine over and you'll see the indent on the flywheel. line it up with the case halves. Voila, TDC. Also a good time to mark the bottom of the flywheel and the fan.
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Dave_Darling |
Nov 28 2007, 10:06 PM
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#13
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914 Idiot Group: Members Posts: 14,991 Joined: 9-January 03 From: Silicon Valley / Kailua-Kona Member No.: 121 Region Association: Northern California |
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orange914 |
Nov 28 2007, 11:07 PM
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#14
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http://5starmediaworks.com/index.html Group: Members Posts: 3,371 Joined: 26-March 05 From: Ceres, California Member No.: 3,818 Region Association: Northern California |
on a stock distributor what rpm should total advance hit and what should max advance be? 2.0 distributor; max advance should be right at 3000 RPM--which is why we check at 3500 RPM. 27 deg BTDC @ 3500 RPM, vacuum hoses disconnected. --DD thanks (IMG:style_emoticons/default/thumb3d.gif) mike |
Thack |
Nov 28 2007, 11:39 PM
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#15
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Member Group: Members Posts: 283 Joined: 1-June 05 From: Houston, Tx Member No.: 4,182 |
On my 2.0 my timing was around 7.5 deg. BTDC at idle and at 3500 rpm it advanced to 27 deg. BTDC if that helps.
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