rhettro74 Posted April 20, 2012 Share Posted April 20, 2012 (edited) I have an 81 L28ET in an 77 S30 And am out of town and can pick up some intercooler and other intake pipe and hose. I measured it once but can't remember if its 3" or 2.5" I am pretty sure I want to run 2.5 Inch intercooler pipes but the connection to the AFM is what I can't remember, I don't have the stock Aircleaner to AFM boot. Also curious should I just use the AFM Boot off of a 77 s30 and connect to that is it the right size? Thanks Edited April 20, 2012 by rhettro74 Quote Link to comment Share on other sites More sharing options...
ctc Posted April 20, 2012 Share Posted April 20, 2012 Turbo AFM inlet and outlet are larger than the NA version. I can check when I get home, but I remeber the turbo AFM being 80mm or approximately 3". Quote Link to comment Share on other sites More sharing options...
phil280zxt Posted April 20, 2012 Share Posted April 20, 2012 The 81 280zxt AFM inlet size is 3". Quote Link to comment Share on other sites More sharing options...
rhettro74 Posted April 21, 2012 Author Share Posted April 21, 2012 thanks all appreciate the help Quote Link to comment Share on other sites More sharing options...
aarang Posted April 21, 2012 Share Posted April 21, 2012 Actually, it is 3.125, or 3 1/8. Quote Link to comment Share on other sites More sharing options...
Tony D Posted April 23, 2012 Share Posted April 23, 2012 Actually ctc nailed it: 80mm. That's actually 0.025" larger than 3 1/8" -- 3.149" Ain't nothin' on a Z-Car that's English Measurement...it's all millimetres! And that AFM got 80 of 'em! Quote Link to comment Share on other sites More sharing options...
gvincent Posted March 16, 2015 Share Posted March 16, 2015 (edited) New to Turbo cars and am putting an 83 Turbo into my 78 280Z, I want to keep the AC and am installing an 2.5" intercooler, I have no workable space to install the AFM easily in the engine bay so I am going to have to mount it in front of the radiator, condenser, intercooler and oil cooler. I will have to extend the AFM wiring and fabricate some sort of mount. My question is I now know I will have to source the 80MM hose and reduce it down to the turbo outlet size but I am not sure what size hose will fit the turbo outlet and if I should run such a long length and a 90 degree elbow and then the 80MM adaptor. Is it 2.5" or closer to 66MM? I just did a web search for T-3 inlet diameter and got 3", 2.25" and 2" ok so what size is the stock unit??? Edited March 16, 2015 by gvincent Quote Link to comment Share on other sites More sharing options...
Tony D Posted March 18, 2015 Share Posted March 18, 2015 I used a Z31 inlet duct to hook to the stock turbo inlet and to relocate the AFM outside the engine bay in front of the radiator. Quote Link to comment Share on other sites More sharing options...
gvincent Posted March 18, 2015 Share Posted March 18, 2015 Thanks Tony, i was going to buy some pipe and couplers but will look for a Z31 inlet duct also. I would like to confirm that the stock inlet size is 60mm as I can't find a definite yes answer anywhere and can't get to the car until more snow melts I have been trying to take a crush course on turbos here at HybridZ and always seem to come to posts with you as the expert in all these posts I have read so far, I'll be reading more and will start posting some questions once I feel I have gained a little knowledge on the turbo swap Thanks again Greg Quote Link to comment Share on other sites More sharing options...
Pac_Man Posted March 19, 2015 Share Posted March 19, 2015 Stock T3 compressor inlet on an '84 300zx turbo is reportedly 2". Given Tony D's use of the Z31 boot on the 280zx T3, I'd say with fair certainty that the 280zx is also 2". Quote Link to comment Share on other sites More sharing options...
Tony D Posted March 19, 2015 Share Posted March 19, 2015 It wasn't the boot, it was the L28ET inlet boot to the turbo inlet, to the Z31 plastic pipe (you melt the unnecessary fitting on it to seal it) it goes through the firewall nicely...you can then adapt with a piece of straight hose coupler. I think on a 280Z you would need to remove the stock AFM bracket to mount it because it's hard pipe and it won't mush around it. The plastic pipe and AFM can be secured to the chassis with anti-vibration mounts like on the AFM as they are essentially one piece if you use the straight rubber coupler. There was a guy on eBay selling "Hump Hose" which is the engineering term for the bellows. A Hump Hose on each end of a rigid pipe will let you have movement relative to the pieces it connects. If you wanted to get fancy, those Hump Hoses are available and could look real nice between sections of aluminium straight piping as you can order colors. I ordered Blue and Black for my Suzuki. My parts should be in Manila Port today...and the second shipment tomorrow. Likely delivered to the house next week...but I'm not there. Most of the stuff I need to make my SS Exhaust, and FMIC for the Turbo Every Van. No more bodged and hacked crap from local manufacture and dubious origin... Quote Link to comment Share on other sites More sharing options...
Tony D Posted March 19, 2015 Share Posted March 19, 2015 I just checked my Cardomain page...no joy on photos of me installing that Z31 NA Duct... Rats! Quote Link to comment Share on other sites More sharing options...
Pac_Man Posted March 20, 2015 Share Posted March 20, 2015 Ah, my bad. Though I'd have to imagine Nissan used the same T3 on the Z31 turbo as the 280zx turbo, but that is just speculation. Quote Link to comment Share on other sites More sharing options...
gvincent Posted March 21, 2015 Share Posted March 21, 2015 OK, I removed the AFM, the rubber mother boot from hell with all the other hose connections and the J shaped pipe from the outlet of the turbo to the throttle body on my 83 280ZX stock turbo mounted in my 78 280Z I measured the outlet side fairly easily at 2-1/8" which is about 54mm I tried to measure the inlet but it is still hard to see the tape measure but I am getting 2-3/8" or about 60mm Do these number sound right? I really want to buy some pipe and fittings can somebody confirm these dimensions? Does anybody have a stock turbo set-up out of the car they cam measure? I am probably going to buy some 60mm pipe and fittings to get me through the front hole and use a 90 degree elbow then go from 60mm to 80mm to attach the stock AFM, I'll have to extend the AFM wires Tony D, I already removed the stock 280Z AFM mount knowing there was no way I was gong to fit the turbo AFM in the engine bay Quote Link to comment Share on other sites More sharing options...
gvincent Posted March 27, 2015 Share Posted March 27, 2015 OK, I removed the AFM, the rubber mother boot from hell with all the other hose connections and the J shaped pipe from the outlet of the turbo to the throttle body on my 83 280ZX stock turbo mounted in my 78 280Z I measured the outlet side fairly easily at 2-1/8" which is about 54mm I tried to measure the inlet but it is still hard to see the tape measure but I am getting 2-3/8" or about 60mm Do these number sound right? I really want to buy some pipe and fittings can somebody confirm these dimensions? Does anybody have a stock turbo set-up out of the car they cam measure? I am probably going to buy some 60mm pipe and fittings to get me through the front hole and use a 90 degree elbow then go from 60mm to 80mm to attach the stock AFM, I'll have to extend the AFM wires Tony D, I already removed the stock 280Z AFM mount knowing there was no way I was gong to fit the turbo AFM in the engine bay Going to order the 60MM fittings and pipe, I hope its the right size Quote Link to comment Share on other sites More sharing options...
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