TID mod and TB porting
11-03-2002, 08:42 PM
#1
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Join Date: Dec 2001
Posts: 689
I spent most of my day polishing off a few things on the car before my meet with my "speed club" next Friday. Mostly, I just changed my plugs, oil, brakes, general preventive maintenance etc..I also decided to upgrade my stock turbo-to-intercooler pipe and port my TB.
I used a 2in diameter piece of pvc pipe for the pipe. It's about a 1/2 inch wider in diameter and straighter than the stock pipe. I ported my TB using an electric drill and some stone grinding bits, then smoothed it out with sand paper.
Man these two mods made a huge difference in the time it takes my turbo to spool up and the overall power of the car. Total cost was $7.00. I highly recommend doing this if you have spare time or are just bored. It took me about 4 hrs total to do everything.
Just thought I'd share.
mike
I used a 2in diameter piece of pvc pipe for the pipe. It's about a 1/2 inch wider in diameter and straighter than the stock pipe. I ported my TB using an electric drill and some stone grinding bits, then smoothed it out with sand paper.
Man these two mods made a huge difference in the time it takes my turbo to spool up and the overall power of the car. Total cost was $7.00. I highly recommend doing this if you have spare time or are just bored. It took me about 4 hrs total to do everything.
Just thought I'd share.
mike
11-04-2002, 02:49 PM
#4
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Originally Posted by pengaru' date='Nov 4 2002, 12:13 PM
if you get bored again, try taking apart your intake manifold pieces (LIM, UIM, plenum..) and port matching them to one another...
mike
11-04-2002, 02:56 PM
#5
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Originally Posted by OKIERX-7' date='Nov 3 2002, 08:42 PM
..I also decided to upgrade my stock turbo-to-intercooler pipe
That's not the TID. I don't think you replaced the charge pipe out of the turbo, since it has the BOV fitting on it.
11-04-2002, 03:21 PM
#6
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Originally Posted by Felix Wankel' date='Nov 4 2002, 02:56 PM
That's not the TID. I don't think you replaced the charge pipe out of the turbo, since it has the BOV fitting on it.
Why don't you think I replaced the charge pipe from the turbo? Because of the BOV fitting? I just made a new hole for it in the PVC.
Port matching the UIM and LIM huh? Whats that all about? I might do that too... What's the benefit?
11-04-2002, 04:19 PM
#9
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Originally Posted by OKIERX-7' date='Nov 4 2002, 09:21 PM
[quote name='Felix Wankel' date='Nov 4 2002, 02:56 PM'] That's not the TID.
I don't think you replaced the charge pipe out of the turbo, since it has the BOV fitting on it.
That's not the TID. I don't think you replaced the charge pipe out of the turbo, since it has the BOV fitting on it.
Why don't you think I replaced the charge pipe from the turbo? Because of the BOV fitting? I just made a new hole for it in the PVC.
Port matching the UIM and LIM huh? Whats that all about? I might do that too... What's the benefit?[/quote]
you match the ports to the gasket, one sides ports are usually much smaller than the other... on my NA the LIM ports were about 4mm smaller in width and height on the primary ports than the primary ports on the intermediate engine housing. The ports on the engine were just about the size of the ports cut out in the gasket... so I matched the ports on the LIM to the gasket... since I was building my motor I also matched the intermediate housing ports to the gasket.. when the engine is assembled though I imagine this would be tough to do. The other mating surfaces between the rest of the intake parts usually have variances in stock form that won't match up right... causing turbulence in the air flowing through them. Just match the ports to the gaskets, the goal is to make the transition from one intake component to the next smooth, you don't want the gasket hanging in the passage obstructing flow, and you don't want one component larger or smaller than the next, match em up best you can and it will improve overall port velocity and flow.
