Watson

Apparently he wasn't as the pot of gold was this thing! So tell me, dat280z, you plan on doing equal length headers with this engine right? This engine sounds god-like with those. http://www.youtube.com/watch?v=oN8pHJ3sQ0Q

If you don't mind me asking, where did you source the engine?

Just doing a little bit of work to Watson. Setting the lash after having to pull some rockers.

A little lower. I'm still sorting out the suspension geometry. Also, there was a kid that had one too many apply juices and left their Jeep abandoned. Technically after four days, I can tow it... Time for a drink. But not too many...

Lets blow the cobwebs off this build. A lot of life stuff has happened that kept me from doing Datsun things, new house, new car, but now back to the build. SUSPENSION STUFFFFFF!!!!!! I managed to nab a set of coilovers off of a Nissan 240SX for $300. I put them on and fell in love again with my Datsun. The handling, oh the handling. That motivated me to do much much more suspension stuff, like put urethane bushings in place of all the old busted rubber bushings throughout the car. I'm also waiting on some bump steer spacers from TechnoToyTuning to come in the mail. I'm aware of the potential issue of snapping T/C rods with urethane bushings so I drilled some holes in the bushings that go against the nut. We'll see how this goes... Out with the old In with the new I had to raise it a little bit.... ...to the height it's currently at What's next

I started making a hydraulic e-brake for the Datsun using a beer tap handle, a Honda Civic clutch master cylinder, and some steel. Almost done, just got to add a swivel to the lower joint and clean it up. Don't make fun of my welds; I know I suck.

I need to test the rev limiter to, you know, make sure it works. Yep, it works. I can't wait to take it to the track!!!!

Alright, I got the shift knob for Watson epoxied and ready to be drilled and tapped. The epoxy looks like beer; neat! Tomorrow I'll start scavenging for parts for the hydraulic e-brake that the tap handle will be used for.

By the water. Happy Sunday everybody!

"I am guessing you already have a lot of time, and money invested in this engine." Time? Yes. Money? No. Quite the exhaust down???? Sir.... But yes, a knock sensor would be nice.

7 psi is ~ 50 kpa but keep in mind that 100 kpa is atmospheric pressure so 150 kpa would be max boost for this application. The higher value is there in case of a boost spike scenario. I get that timing should max out at 34-36 degrees but with this setup I am able to run low IATs with proper fuel and based off the butt-dyno, no noticeable surge or stuttering was felt, so it was assumed that there was no knock. In fact, the 40s range felt quite smooth for cruising so we left it at that. I think there are a lot of variables to consider here. Quench area, cylinder head temps, AFR, CLT, IAT. A sweet spot of 17 ATDC? That would be an interesting variable to record; the sweet spot of downward motion on a piston in relation to flame speed.

Okay so my L28ET is built, running, and super awesome. Its loud and goes pretty fast. I'm currently doing road tuning before I hit the dyno and I wanted to get some feedback from the interwebs to see if I'm on the right track. So the engine setup is a N42 block and head with dished pistons. I believe this should be a CR of ~ 8.5:1. The turbo is a stock L28ET turbo with a larger compressor housing (I didn't take measurements before I installed it. The PO claimed it is a Super 60) running at 7 psi. I'm running a FMIC and I believe the fuel map is pretty well dialed in. I'll post a picture of the fuel map, current timing map, and projected timing map. My question is, how much advance would you, the experienced reader, run on a setup like this? I feel like my current spark map is super conservative. I did run much more advance before the current map and let me tell you, traction was a real issue. If I crank the timing way up to the projected map (in the range above 100 kpa), and given my current setup, how much of an issue do you think knock would be? You see, I don't have a knock sensor and the exhaust.... well, the exhaust exits the front fender so I may never hear knock. So tell me, with your experience with turbo L28 engines, when did you experience knock? How did you know it was knock? How high would you recommend I crank up the advance? Fuel map. While cruising (below 100 kpa), the AFR is ~ 14.7. The AFR for max torque (estimated at 4500 rpm, full boost) is ~ 12. Current spark map Projected spark map

Fender-exit exhaust. Its only kind of ridiculous.... I can't wait to get to a track to see how many sideways I can get with this thing! I also can't wait to get some dyno time to get the timing map optimized.

Thanks for the tip! I haven't considered that.

A buddy of mine and I decided to do some random what-nots to the Datsun. We made this. A wooden dash and a fender exist of the exhaust. Pics of the final exhaust setup once the stainless steel plate is on to take up the slack cut-out area. Video tomorrow of the sound. I can't wait to start it up!