The reason I got those TRWs for so cheep is because they are cast pistons, I thought they were forged but they turned out to be cast. Those pistons are still better than stock.
Oh, I guess that explains it. I thought they looked cast. Oh well, I'm still going to run them like they are forged. I'll just have to be very conservative when i'm tuning it. By not getting the block decked that'll save me $60 bucks. Half way to set of E85 metering blocks. I want all the octane i can get.:Brow:
I finally dropped the block, rods and cam bearings off at the machine shop. Then tonight i finished weight matching the pistons. Got them all to weigh in at 685 grams. The one piston that i had that weighed in at 647, i ended up using an old thicker wrist pin and it put it at 685. Then i also started on the timing cover. Opened up the passages to 1/2" and tried to round out the corners as much as possible. They passages were about 7/16 in diameter so i'm hoping this will help a little bit. Also cleaned up the ports on the oil pump cover. Planing on staring on the heads tomorrow. The turbo is supposed to show up tomorrow. I'll take some pics of as soon as i get it and post them up.
The turbo has arrived. UPS has it weighing in at 39 pounds. From first looks it appears to be of good quality. The exhaust and turbine castings look like any other turbo i've seen. They just don't have a manufactures name or the sizes of the housings of them. Came with covers over all the openings, which is good. It spins very smoothly and is just right for tightness. Has the feelings of a new turbo, because it is. I plan on taking the housings of to clean them and flush the center section out with some lacquer thinner through my engine cleaning gun. I think the turbo will survive. Here's some pics. Of course i've taken them with the standard turbo measuring device that you see all over the internet.
From what I've found about that turbo, the seals and bearings go bad very quickly. Now whether it's because they are junk or because debris destroys them, I don't know. Also, make sure you check the inducer and exducer measurements. Supposedly a Chinese GT45 is not the same as a Garrett GT45 dimension wise.
I was wondering the same thing......if it were me shooting the photos you might just see the empty plastic rings that hold the other 5 brothers together. Am looking forward to seeing how this turns out as I am now contemplating the adding of turbos to my project......hmmmmmmm.
AZ-69 Skylark- In my research I've read the same think about the seals and bearings. From what i get, it's from not breaking it in properly and or there being crap in the center section. This one spins great and is silent. I still want to take it apart to inspect and clean it. On the size of the turbo. It is not the same size as a real GT45. I knew that from the start. But for the price and the size of the turbo I'm happy with it so far. Today i dropped off the pistons after weight matching them and picked up my rods so i can weight match and polish them. I'm going to try and build my own jig for holding the rods ends so i can weigh them separately. Not sure if i'll have time tomorrow to do it but i'll post some pics when i do. I'll be picking the engine up from the machine shop on Friday and hope to have the engine in the by Sunday night. Btw, he has more than 5 brothers. At last count he's down to 17, had 24. Brings a tear to my eye every time i think about it.:ball:
nice to know there are 24 brothers.......my other 14 left tonight without a word.......my stomach is happy as a clam. Now if I could only work on my motor with a full stomach. Looks cool....am looking forward to the turbo progress
Funny how people don't check on stuff like that in advance. Hopefully it solves the problem. You definitely have my attention with your build. Good luck and thanks for sharing. As for your tools, I guess we'd have to call them disposable tape measures. I prefer to pick off the more mature ones that weigh in at 24oz. myself. :grin:
Mark you will need to be careful if you put that turbo on your truck. Why you ask. Because Fords are only built to hold about 150 hp:grin:
James can you tell us how this turbo should perform with a 400 hp NA engine and lets say 14 psi using your desktop simulator?
I need more info. Like cam card, compression, valve size, inter cooled. I will make some guesses and post in a little bit.
In a perfect world, 14 psi will i think double your horsepower. So 800hp would be the magic number. I think 150hp is pushing the limits on Fords. I remember when i was first looking at the whole turbo thing years ago reading about Ford 5.0s splitting the block at 500hp. That's pretty sad. Guess it was Fords better idea. :TU: If you type in GT45 on eBay you'll find a whole bunch of them. My grand total with shipping was $297. You still need to get a wastegate and a blowoff valve. So far to me it's a good buy but only time will tell.
with 75% efficiency intercooler it is 744 hp @ 7100 RPM No intercooler is 626 hp @ 6600 RPM 8.5:1 Comp Fairly mild cam lots of head work 355 CI Buick I assumed
Interesting, thanks! How does the water/methanol rate for intercooling efficiency? I am looking at running a 80 shot of nitrous (10 hp to each cylinder direct port injection) and have it shut off once I get to 8 psi of boost from the turbos. The nitrous is a great intercooler so that may be another option for us boosted folks.
