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DIY Turbo Discussion greddy on a 1.8? homebrew kit?

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Old 05-14-2010, 05:31 PM   #1
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Question Turboing posibilities...

I've drive a 91 longnose that I purchased back last sept. and have been looking to turbo for a while now. I recently got a house so it's slowed me for the past few months but I'm looking to start getting some things now. My questino to you gus is should I stick with the 1.6? It runs pretty good for the most part but it boggs a lot when I come to a stop and I wonder if that might be an issue with the turbo or if it's just a possible tuning issue. It has new pratically eveything(belts (including timing), alternator, plugs, wires, 5-30 extended performance oil, and 150k miles(bought it with 135).

I saw where I could get a 99 1.8 for around 1k but would it be worth it? I need to decide before I get engine management because it's different ECU's for MS as i'm sure you all know. I'd like 225-300 whp (not sure till I actually get there) but just looking for some input on what you guys, the experienced might do. Thanks for the Help!!
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Old 05-14-2010, 06:24 PM   #2
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That bog is likely just a tuning issue.

A 1.8 will kick that 1.6's *** BUT, if you can tune the bog out you can get to your HP goals with the 1.6.

wait wait, is the turbo on or it bogs in stock form?
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Old 05-14-2010, 07:34 PM   #3
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It's probably bogging because you don't have engine management. What band-aids are you currently running? I'm guessing your car is going far too rich at idle.
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Old 05-15-2010, 09:16 AM   #4
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Quote:
Originally Posted by TURNS101 View Post
That bog is likely just a tuning issue.

A 1.8 will kick that 1.6's *** BUT, if you can tune the bog out you can get to your HP goals with the 1.6.

wait wait, is the turbo on or it bogs in stock form?
It's still N/A. I figured that's what it had to be. Ive checked all the vacum lines and have no clue else what it could be. It pulls strong 7k+ though so I think the engine overall is in good shape.
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Old 05-15-2010, 09:17 AM   #5
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Quote:
Originally Posted by dustinb View Post
It's probably bogging because you don't have engine management. What band-aids are you currently running? I'm guessing your car is going far too rich at idle.
No turbo right now, any thoughts?
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Old 05-15-2010, 09:19 AM   #6
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Also, if I did decide to go 1.8 is there any specific years I should target? I think I've heard the 99+ has variable timing which if so could lead to more tuning possibilities and possibly more power/better eficiency, is this so? Also would it be a bad idea to just drop a mazdaspeed engine in there if I could find one for a reasonable price?
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Old 05-15-2010, 10:24 AM   #7
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94-95 have lower compression than 96-97 (stock pistons). Personally I think messing with VVT is a waste of time unless you want it for some other legit reason.
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Old 05-15-2010, 11:01 AM   #8
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I was in a similar situation with my '90 when I got it. I even had the bogging problem. The first thing I installed was a Megasquirt unit on the 1.6. That gave me experience with the MS and cured the bog (and made the car a LOT faster -- the 1.6 with megasquirt and no air meter is a fine car to drive. It doesn't get raped by minivans at stoplights the way it did when stock.) I've been driving it this way for the last year and a half.

I did not buy any turbo stuff for the 1.6. I bought a 1.8 motor (1996, $500, included spare transmission and delivery) and 1.8 turbo stuff. My reasoning was if I'm spending money on making the car faster, $500 for a 10% increase in displacement is a no-brainer.
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