intake tube alignment, 3/4 tube to the distributor is off |
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intake tube alignment, 3/4 tube to the distributor is off |
malcolm2 |
Mar 21 2012, 06:44 PM
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#1
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Advanced Member Group: Members Posts: 2,747 Joined: 31-May 11 From: Nashville Member No.: 13,139 Region Association: South East States |
Well, I did not pay enough attention as I was taking this engine apart. I cleaned, blasted and painted the intake tubes and the "intake distributor" (please correct me if I have mis-named). Anyway, I am a good 1/4" off center on the #3 cylinder intake tube, left tube. This can't be good or right, can it? I can get the short rubber hose on,
this kind of offset will leak right? the 1/2 side lines up nicely |
JawjaPorsche |
Mar 21 2012, 07:10 PM
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#2
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Advanced Member Group: Members Posts: 3,463 Joined: 23-July 11 From: Clayton, Georgia Member No.: 13,351 Region Association: South East States |
Could you have the tubes on the wrong side?
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Valy |
Mar 21 2012, 07:14 PM
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#3
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Senior Member Group: Members Posts: 1,677 Joined: 6-April 10 From: Sunnyvale, CA Member No.: 11,573 Region Association: Northern California |
Is the air distribution box in the correct location? How are the other 2 j tubes?
Are left and right j tubes connected in the right place? Did you mix 1.8 and 2.0 components? |
Valy |
Mar 21 2012, 07:18 PM
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#4
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Senior Member Group: Members Posts: 1,677 Joined: 6-April 10 From: Sunnyvale, CA Member No.: 11,573 Region Association: Northern California |
Looking at the pictures again, I see 2.0 runners and 1.8 box.
If you replace the heads to 3 studs, just drill the 1.8 runners. |
malcolm2 |
Mar 21 2012, 07:34 PM
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#5
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Advanced Member Group: Members Posts: 2,747 Joined: 31-May 11 From: Nashville Member No.: 13,139 Region Association: South East States |
I have tried the tubes on both sides, same result. These are 1.8 heads. 1 came off the car, Len gave me the other one. Both have 4 studs and the tubes have 4 holes and they came off of this engine....so the head end is fine, and I have the spacers on the heads. maybe I could get me a longer rubber hose?
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malcolm2 |
Mar 21 2012, 07:36 PM
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#6
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Advanced Member Group: Members Posts: 2,747 Joined: 31-May 11 From: Nashville Member No.: 13,139 Region Association: South East States |
Is the air distribution box in the correct location? How are the other 2 j tubes? Are left and right j tubes connected in the right place? Did you mix 1.8 and 2.0 components? The box really won't go on any other way. the distance from the box pipes to the J-pipes is the same on both sides, 1 is just off center. German welder must have been in a hurry to go to lunch when he welded this one. |
02loftsmoor |
Mar 21 2012, 07:39 PM
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#7
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Senior Member Group: Members Posts: 577 Joined: 26-June 11 From: Ft. Worth TX Member No.: 13,243 Region Association: Southwest Region |
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McMark |
Mar 21 2012, 07:42 PM
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#8
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914 Freak! Group: Retired Admin Posts: 20,179 Joined: 13-March 03 From: Grand Rapids, MI Member No.: 419 Region Association: None |
The attachment point near the flywheel ison the wrong side.
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malcolm2 |
Mar 21 2012, 07:42 PM
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#9
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Advanced Member Group: Members Posts: 2,747 Joined: 31-May 11 From: Nashville Member No.: 13,139 Region Association: South East States |
From your posts you seem to be in the know. Question, would it be worth while to polish and match the intake system? Thanks Wes Looking at the pictures again, I see 2.0 runners and 1.8 box. If you replace the heads to 3 studs, just drill the 1.8 runners. But he thinks I would put a 3 hole tube on a 4 stud head and not notice? (IMG:style_emoticons/default/shades.gif) |
malcolm2 |
Mar 21 2012, 07:51 PM
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#10
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Advanced Member Group: Members Posts: 2,747 Joined: 31-May 11 From: Nashville Member No.: 13,139 Region Association: South East States |
The attachment point near the flywheel ison the wrong side. wouldn't all four be off center if I move the mount to the other side? here is a picture of everything together. the plenum tubes are about 2-1/4" center to center. the tubes on 1/2 side are the same. the 3/4 jtubes are only 2". Am I crazy? |
dlee6204 |
Mar 21 2012, 08:20 PM
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#11
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Howdy Group: Members Posts: 2,162 Joined: 30-April 06 From: Burnsville, NC Member No.: 5,956 |
My rear mount is on the same side as yours. Could the pipe have been tweaked/bent?
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Valy |
Mar 21 2012, 08:45 PM
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#12
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Senior Member Group: Members Posts: 1,677 Joined: 6-April 10 From: Sunnyvale, CA Member No.: 11,573 Region Association: Northern California |
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malcolm2 |
Mar 21 2012, 08:45 PM
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#13
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Advanced Member Group: Members Posts: 2,747 Joined: 31-May 11 From: Nashville Member No.: 13,139 Region Association: South East States |
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Spoke |
Mar 21 2012, 08:55 PM
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#14
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Jerry Group: Members Posts: 7,052 Joined: 29-October 04 From: Allentown, PA Member No.: 3,031 Region Association: None |
Here's a couple of pics of my 1.8L engine showing the runners. The plenum on yours looks to be mounted like mine.
Attached image(s) |
malcolm2 |
Mar 21 2012, 09:08 PM
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#15
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Advanced Member Group: Members Posts: 2,747 Joined: 31-May 11 From: Nashville Member No.: 13,139 Region Association: South East States |
Here's a couple of pics of my 1.8L engine showing the runners. The plenum on yours looks to be mounted like mine. all the tubes on yours looks to be lined up with the plenum tubes. Your plenum is smaller than mine tho....("not what she said!") mine is an early 75, made 10/74. I bet your car is older. Wonder if there are different length tubes? |
malcolm2 |
Mar 21 2012, 09:09 PM
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#16
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Advanced Member Group: Members Posts: 2,747 Joined: 31-May 11 From: Nashville Member No.: 13,139 Region Association: South East States |
From your posts you seem to be in the know. Question, would it be worth while to polish and match the intake system? Thanks Wes Looking at the pictures again, I see 2.0 runners and 1.8 box. If you replace the heads to 3 studs, just drill the 1.8 runners. But he thinks I would put a 3 hole tube on a 4 stud head and not notice? (IMG:style_emoticons/default/shades.gif) |
914itis |
Mar 21 2012, 10:31 PM
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#17
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Advanced Member Group: Members Posts: 2,892 Joined: 9-October 10 From: New York City Member No.: 12,256 Region Association: North East States |
I think that you may be using thicker intake gasket, where did you get them from?
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bigkensteele |
Mar 21 2012, 10:56 PM
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#18
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Major Member Group: Members Posts: 2,197 Joined: 30-August 04 From: Cincinnati, OH Member No.: 2,660 Region Association: South East States |
Here's a couple of pics of my 1.8L engine showing the runners. The plenum on yours looks to be mounted like mine. all the tubes on yours looks to be lined up with the plenum tubes. Your plenum is smaller than mine tho....("not what she said!") mine is an early 75, made 10/74. I bet your car is older. Wonder if there are different length tubes? I had the same problem with mine, and it is an early 75, made 11/74. I did not change any hardware, just took it down to a longblock, replaced all seals and gaskets, and when I went to put it all together, I could not get the runners to line up no matter how I tried. I could not see a way to make it better, no matter how I mounted the plenum or the runners. I ended up just getting them as close as I could and put the runner hoses on hoping that I had a good seal. Of course, I came home on a flatbed last Thursday, but I don't think that it was due to this.... |
Spoke |
Mar 21 2012, 11:05 PM
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#19
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Jerry Group: Members Posts: 7,052 Joined: 29-October 04 From: Allentown, PA Member No.: 3,031 Region Association: None |
Is it possible to loosen the bolts on the plenum to see if there is any play in the mounting? Perhaps even apply some pressure to bend the mounting tabs to align the tubes first, then tighten?
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Valy |
Mar 21 2012, 11:29 PM
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#20
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Senior Member Group: Members Posts: 1,677 Joined: 6-April 10 From: Sunnyvale, CA Member No.: 11,573 Region Association: Northern California |
I have tried the tubes on both sides, same result. These are 1.8 heads. 1 came off the car, Len gave me the other one. Both have 4 studs and the tubes have 4 holes and they came off of this engine....so the head end is fine, and I have the spacers on the heads. maybe I could get me a longer rubber hose? Did you replace the cylinders? If so, can you check they are the same length as the old ones? |
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