JustinOlson

Its hard to tell, but I would focus on the turbo side of things before dropping money on the head right now. If your turbo is maxed out, your only going to make the same power at less boost with a new head. I would try and get away from the Nissan turbine housing and internal gate if you are looking at making more power. I'm taking welding classes right now and will have a very nice tig setup soon. This winter sometime I'd love to help you redo your turbo system on your car. 3" downpipe, Nice exhaust manifold with external wastegate and bigger turbo. I bet 500whp would happen if we hit the restrictions in your setup. btw, here are some welds I layed down about a week ago: Regards, Justin

I'd say its not the lack of the wastegate being too small, or big but the turbo is just out of capacity. Maybe try running with an open downpipe and logging some boost. I bet that would flatten out the boost curve if the turbo has anything left in it. Regards, Justin

Pics of the LSM block here: http://ls1tech.com/forums/showthread.php?t=439474&highlight=lsm+block

That is very cool. I love the idea of using C5 Corvette suspension up front What kind of price did you end up paying for all of the suspension pieces from that wrecking yard?

http://www.zcar.com/forums/read.php?f=4&i=296243&t=296243#reply_296243

How about the L92 crate engines? What kind of price can he get on those? Regards, Justin

Dont forget the audi 5 cylinder. They are great sounding motors http://video.google.com/videoplay?docid=6369021561677387492&q=audi+turbo Thats what I have in my audi project and am building a high reving version to put into my datsun Heres my audi at this point:

I'm in the market for a tig welder at this point and I think the Thermal Arc 185TSW is going to get my money. For the price, its the best thing out the for me. More info here: http://www.thermadyne.com/newsNewProductDetail.asp?div=tai&id=220

I think they are beautiful pieces, but has anyone really proven the struts are a good track strut? I'd be all over these if they are comparable to a Koni 8611 in track performance. Also, how tall are the springs? Justin

Latest and Greatest Day 6: Stainless: Mild:

What engine are you putting this car that would necessitate such a monsterous tire? I'd imagine the size is more for looks then need. Justin

With a very good BSFC(IE efficient motor) you can hit 700whp through a manual trans on the GT35R on a dynojet. I dont see using a BMW motor as the best idea as far as affordable big power build. BTW, heres my friends stock S2000 F20C engine putting it down: I think this will be the motor I'll go with if I can find a manual transmission that will hold the power. Justin

I want to see some better pictures of the hood vent!

I've been tig welding for 4 days now and would like people to give me pointers and a general critique of my welds. This is on a lincoln 275 I think. I really want to try a miller. Anyway, some of these are stainless and some aren't. I'm not fast enough on stainless as the welds are rather dark and too big for the thickness of the material(16 gauge). How are you guys moving the torch? Is there a pattern that you move the torch in to smoothly move the puddle along and make a nice weld? MILD 12 gauge: Stainless 16 gauge: Modified by Justin Olson at 12:14 PM 7/30/2006

That is a great turbo. People are making over 700whp with that turbo on race gas

Is it a stage 5 turbine wheel or a P trim? Regards, Justin

Has anyone smoothed the ZG;s once installed to hide the recesses for the bolts? I like the ZG flares, but would like a sleeker look. I want to get away from the 4X4 flare look. Regards, Justin

Its all based on the size of your turbine wheel and the pressure differential across the turbine. If it is very easy for exhaust gases to pass through the turbine,(example: larger turbine wheel, large exhaust), it will be harder to get exhaust gases to go through the wastegate.(edited for a brain fart) The lower the boost(the more exhaust you are bypassing around the turbine wheel, and not turning the compressor wheel) the smaller the wastegate you will need for a given turbo. Regards, Justin

I agree with John on what he has said. This is a very good basis for a quality manifold. Cylinder pairing based on firing order should seperate pulses as much as possible to keep individual cylinder pulses from interfering with eachother. If you are running a divided turbine housing, you will want to pair cylinder 1,2,3 together and 4,5,6 together. This is vital to making a split scroll turbine housing work properly. On 2L race engines I've seen 1000rpm reduction in spoolup time by using a properly designed divided collector vs a common collector. Ideally you will want to use 2 wastegates as well to completely seperate each side of the turbine housing from one another. Theres a good thread going on right now reading this here: http://www.honda-tech.com/zerothread?id=1630241 Go read "Street Turbocharging" by Mark Warner. It will go into header fabrication a bit more. Ideally, you will want to use an equal number of bends per runner. This balances the restriction across each cylinder. Priority number 2 is to keep the runners close to the same length. The average length of the runner will also effect the helmholtz frequency, and effects the torque peak. To read more about Helmholtz read this SAE article: "Jameson, Renee T., and Hodgins, Patrick A., Improvement of the Torque Characteristics of a Small, High-Speed Engine Through the Design of Helmholtz-Tuned Manifolding, SAE Paper 900680, March 1990." Regards, Justin

Very Nice wheels! Are those Jongbloed wheels John? Is that the 285/35-18R setup? Regards, Justin

Yeah, the writing was on the plastic. No harm. I actually laughed my ass off when I saw it. I almost felt like I was dreaming this up as I walk up at 4am and see my car... Good Times, I there will be some retalliation!

So I went to a pool party with my friends Mikey, Nick, Bryce and Robert. I'm the designated driver so my friends could get shitty and have a good time without having to worry about driving home. Anyway, we had a great time playing pool volleyball, tip cup and other great events. Everyone is having a great time. Around 12pm I go and sit down in reclining deck chair. I end up passing out thinking my friends would find me when they were ready to go. Next thing I know I wake up at 3am and the party is over. Everyone is gone including my friends. I call around trying to find a ride home, but everyone is assed out. I check my voice mail to hear multiple belligerent messages that I skipped out on my friends and left them with no way to get home. I laugh at this a bit and then start walking to my friends house across town. A little over a hour later I arrive at my friends house and find this (CLICK ON PICS TO MAKE FULL SIZE): (Notice the message written on the back of the car: "IT SUCKS TO BE YOU!"

I'm willing to do head flanges for other cars if there is potential to be a market for the flanges. What engines are you interested in having intake flanges machined for? Regards, Justin