Ultimate "Doh!"
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compression
- Posts: 392
- Joined: Mon Aug 11, 2003 10:08 am
Ultimate "Doh!"
I got my redtop installed and running in my datsun 510 in early february. I am using an AEM EMS and was building the tune from scratch. As i got it tuned, it never really made any good power, even at 12psi boost. I checked EVERYTHING! for almost 3 months. It was low on vacuum at idle, it got horrible gas mileage, it was running alittle too hot, the idle was never rock solid. I rechecked everything. After hounding all my super-auto techno savy friends, i still had these problems. So i eventually blamed it on the EMS, seemed like an easy scapegoat.This last weekend, I decided to check the cams. So i opened up my friends SR and took some pics of his cams at TDC, then I went home and took off my valve cover. I put my engine at TDC compression, and something wasnt right. Yep, you guessed er, when I rebuilt the motor, I put the cams in wrong. They were both 2 treeth advanced from the crank. So I popped off the intake cam gear and loosened the chain and made my cams look like my friends cams. I put it all back together, sync'ed the timing and fired it up. It started right up after a bit, but was lean, so I fattened up the map and took her for a spin.Man I love the SR engine!! this thing rips the tires through first, second and pulls hard in 3rd. It is amazing how much better it runs with the cams in right. This project has been in the works for a very long time and it is a good feeling to FINALLY feel some payoff. I am amazed how much torque this thing has at the low rpms and the S15 T28 spools up instantly. I am running 12psi, but will up it to 15 soon, assuming the stock S13 injectors can keep up, which they might (if I turn up the fuel pressure too).Lesson: just because you followed the factory service manual, that doesnt mean that your cams are in right!
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compression
- Posts: 392
- Joined: Mon Aug 11, 2003 10:08 am
There are some pics somewhere in the datsun 510 forum section. Or, Try this:
http://datsun510.com/photopost...ort=1
http://datsun510.com/photopost...ort=1
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compression
- Posts: 392
- Joined: Mon Aug 11, 2003 10:08 am
the turbo is an S15 T28 ball bearing. Compressor side-60 trim T3 BCI-8 wheel in a.60 a/r TO4B housingExhaust side- 62 trim T25 turbine in a .64 a/r housing.There are more pics in that gallery, i think there is one showing that turbo compared to the stock S13 turbo.
The manifold is from JGS. Yes, like everything else, it was custom made. What you dont see is the TiAL 35mm wastegate which is underneath the manifold. There was a flange welded onto the manifold for this wastegate.
Hope to have her tuned and on the dyno soon.
The manifold is from JGS. Yes, like everything else, it was custom made. What you dont see is the TiAL 35mm wastegate which is underneath the manifold. There was a flange welded onto the manifold for this wastegate.
Hope to have her tuned and on the dyno soon.
Man.... I miss my 510. I wish that I could have the "newness" of my S13, with the body of the 510 and heart of the SR20DET. That would have been a BAD *** car. I'm envious, but as a previous 510 owner... totally stoaked that you're not only keeping a 510 on the road, but stuffing boost through it on top of it!!