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Another Rn + 20G, My 'build' Thread


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If I were me I'd shave the mount too! Which I did!! And now it runs!!!

I'd have a video, but its 10:30 and there are kids asleep and I have no downpipe. Tomorrow I'll button it up and drive it to an exhaust shop.

Edited by Tightmopedman9
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Engine%20bay.jpg

It looks so dirty in this picture, but I swear it's cleaner in real life!

The RB20 downpipe ended up working pretty well, they cut about 5" off of it and it lined up pretty well. The flange was horribly warped and about 1/16" had to be taken off to make it flat again. Unfortunately, the shop did not weld on any v-band flanges, so my exhaust has no clamps up until my muffler, something I'll have them correct next week.

Turbo.jpg

Turbo%202.jpg

I redid the cold side piping to allow for a larger air filter. I'm using a Spectre 9831 4" intake rated for 700CFM. Heard good things about it from the muscle guys. Only $70 for the filter and housing.

Cold%20side%202.jpg

Cold%20side.jpg

I redid the intake shortly after this so it isn't pointed straight into the back of the headlight. It now lines up with the stock intake location on top of the radiator. I'm probably going to get some 4" ducting and run it to the bumper.

After 220 miles of city driving I decided to start turning up the boost again. Last night I made it up to 20psi from 4100RPM to redline. The spoolup is about 400RPM slower, but I no longer encounter surge. Unfortunately, I'm already at 80% duty cycle on my injectors.

I had upgraded to a 94-95 fuel rail so I could use a Dodge Daytona FPR; I must have gotten a defective unit since my equivalent injection size decreased according to my injection constant. I'll get a fuel pressure gauge and check for sure.

Fuel%20rail.jpg

I forgot to post these earlier, but I got my flywheel lightened by ~4.5lbs. It felt different for about 30 seconds and now I'm used to it. Paired with the heavier crank it seems to rev just as freely as before.

lightned.jpg

lightned%202.jpg

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That lower radiator hose has leaked on the past 2 radiators and past 3 radiator tubes, which included old OEM, new OEM and current silicone tubes. I cleaned the buildup on the outlet thinking that might be it, but it still leaks. Suggestions?

For the heater hoses, it must just be the camera angle. One goes up over the intake and the other under. They have sufficient room to move.

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That lower radiator hose has leaked on the past 2 radiators and past 3 radiator tubes, which included old OEM, new OEM and current silicone tubes. I cleaned the buildup on the outlet thinking that might be it, but it still leaks. Suggestions?

For the heater hoses, it must just be the camera angle. One goes up over the intake and the other under. They have sufficient room to move.

Use a Volvo hose :D

That heater hose - is it from an NA? it doesn't have the right angle that should be present where it enters the firewall - that's what's throwing me off.

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Had a mini tune-n-meet with my buddy today. He has a C70 with wiseco pistons, china rods, darton sleeves, tubular exhaust manifold and a GT3076R. It's been a pain to tune because of his full 4" intake setup with a MAF midtube. I'll post a showroom thread of his car when we get it on the dyno...

Mini%20meet.jpg

mini%20meet%202.jpg

Please disregard the terrible front bumper, it is getting replaced as soon as I spot a good bumper cover at the junkyard...

Edited by Tightmopedman9
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Just got back from a small meet. I did 2 pulls from 30MPH with an R6 and pulled ahead just barely both times. This was at 18-20psi. I'm shooting for a solid 25psi, but I'm having a hard time meeting my boost target unless I overshoot first. I'm thinking that my 10lb spring might not have enough tension to pull the wastegate back closed at high boost. I'm going to try my 15lb spring again and see if it helps.

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