t25 hard to spin with my fingers

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mkory
Posts: 2321
Joined: Sun Jul 11, 2004 7:25 am
Car: Mazdaspeed Miata

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Yeah, the turbo is building boost just fine. The car just feels slugish down low, but is pretty damn quick after boost is built.


Luke

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It sounds kind of like timing to me. I bet if you take your turbo of now having driven it, it will spin freely.

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Neil
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Joined: Tue Apr 20, 2004 10:27 pm
Car: shooting laser guns

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you didnt answer the 2 people who asked you if you checked the timing. Who's to say the place you got your motor from didn't rob from peter to pay paul with cam angle sensors?

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mkory
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Joined: Sun Jul 11, 2004 7:25 am
Car: Mazdaspeed Miata

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The turbo is good. Haven't taken off the intake just because it's pretty sandwiched in there, but I'm sure it spins freely enough because it's boosting fine and is fairly responsive.

Motor came from Phase2, haven't checked the timing yet because the only timing lights I had access to at the time were old and needed a direct contact with the spark.

The car made the 4 hour drive just fine, no issues at all. The starter doesn't sound the strongest, but it might just be the difference from the KA starter sound I'm used to right?

Also... I had a open vac line T'd off the wastegate signal. I was wondering how 50 more horses felt SO strong, I was running at the T25's max boost... oops. I'm surprised I didn't blow anything up with my stock injectors and fuel pump. Lucky me I guess. Anyone know how much power that probably was at the wheels?

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Neil
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Joined: Tue Apr 20, 2004 10:27 pm
Car: shooting laser guns

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mkory wrote:haven't checked the timing yet because the only timing lights I had access to at the time were old and needed a direct contact with the spark.
direct contact with the spark? plug? wire?

I undid my no.1 coilpack, took a KA's wire and put it on the no.1 cyl plug, cut the other end off the KA wire and jammed it up into the coilpack and got a reading off that. there's apparently a small loop of wire at the back of the head you can use to hook a timing light's sensor up to also

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mkory
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Joined: Sun Jul 11, 2004 7:25 am
Car: Mazdaspeed Miata

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Yeah... I tried the small coil at the back of the rocker cover, and also around all 3 #1 wires with no luck. The timing guns I was using needed to be hit with an actual spark or something. I'll try it again with a newer gun.

I'm just not too fond of the idea of opening up a coilpack and jamming a sparkplug wire in it.

Luke

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That black loop has NEVER worked for me. What i do is what the other guy said, I took a high impedance speaker wire, like 4 gauge, wrapped elec. tape around one exposed end, so that it would sit on the spark plug. Then 'gently' slide the other exposed end into the coil so it contacts the wire, and use another piece of tape to hold it there.

If you want, I can upload the pics I took yesterday of a CAS restab. You still need to time it with the light afterwards, but if you use the spark wire technique, you can clip on any timing light to it. Believe me, this is the best way to get it to work, even in the FSM it says to do this. Good luck.

I have a feeling the timing being off a little could've saved your engine when you ran open WG. Get a boost gauge!! Too far retarded timing would help avoid detonation, and if it's too far advanced, the knock sensor would detect knock and automatically pull timing. Both making the engine feel like a DOG.

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Neil
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Joined: Tue Apr 20, 2004 10:27 pm
Car: shooting laser guns

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I didnt really "JAM" it. There's nothing up in the coilpack, its just like any other spark plug boot. The only thing up in there is a little spring to make contact with the top of the spark plug. don't be so worried about dumb stuff like figuring out how to set the timing without damaging anything, cuz you won't. just cuz its an imported motor doesn't mean its more fragile or something.

Luke

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Some visual stimulation for you guys. This is the wire i use for timing:


Luke

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Its nothing complicated.

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mkory
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Joined: Sun Jul 11, 2004 7:25 am
Car: Mazdaspeed Miata

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Thanks guys... I'll try that as soon as I can.

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wannawangan
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Joined: Sat Jun 04, 2005 2:51 pm
Car: FOR SALE 1993 Nissan 240SX email me for more details
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I'll buy your old "crap" T25.

Email sent!


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