Thread: sr20ve itbs 50mm bmw

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2013-07-19 08:15:53

#151

immigymp

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Not sure , this is why I was enquiring about converting a Ve to a roller rocker head

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2013-07-19 20:44:31

#152

bummy

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sounds like i need to go to 184e cams

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2013-07-20 20:56:57

#153

bummy

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what are peoples thoughts on this header? i believe i'm loosing power with my current setup. the bottom elbow will be cut off and turned to face other way. then stepdown to 2.2.5" then up to 3" into muffler. or might leave it 2.5" as from header to muffler will be a max of 24" i reckon

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161067158301 best put ebay item number, i know it not a nismo unit.

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2013-07-20 23:13:07

#154

sss4me

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i think it would be wise to wait and see what the guys at trackforged come up with first. i also think $75 invested at Find Custom Exhaust, Header Collectors, Race Mufflers & More | Burns Stainless could be a handy investment for your (custom) setup .

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2013-07-20 23:14:38

#155

BlueRB240

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I think most people have better luck with a 2.25 choke, in your case I'd choke it down to 2.25 then put a reverse cone on it bring it up to 3" you should have more room than a standard car to pull it off.

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2013-07-20 23:55:45

#156

bummy

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i dont have a lot of room, as there is a engine brace there, and i need to keep it as compact as i can, and the muffler needs to be with in the frame/chassis.

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2013-07-22 15:06:17

#157

Doctor G

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Originally Posted by bummy

ok new dyno sheet red line is after the new adaptor and blue is before. you can see a heap smoother. and some rpm points i picked up 25hp. over all 10hp gain and about 30ft/lb or torque. which is good. yet to race on it. but big gains in low rpm. which is nice. remeber this engine is spinning 31" mud tyres. engine has approx 110,000ks before i put it into race car over 18months ago. so probly getting tired now. internal mods are still stock engine just bolt on's on a high comp fresh engine it would be good numbers

Got any dyno graph overlays compared to the stock intake mani and exhaust mani? You mentioned 164whp stock which means you are still down 25whp. Or did i miss something? It seems the massive collector is hurting you a lot. Will be keen to see results after you change it.

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2013-07-22 16:33:59

#158

THOR

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31" mud tyres

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Calum basic, N60 maf, N1 cams, Greddy mss, JWT cam gears, ssac 2.5" header, 3" exhaust, Vibrant oval pan, ES bushings, JWT popcharger, B15 stock clutch disc and A.C.T. HD pressure plate, 8.5 lbs Fidanza flywheel, gt-s tranny, Prothane E/Mounts, Vz-R front seats, TEIN HA coilovers 197whp/146wtq

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2013-07-23 13:45:02

#159

ca18 bluebird Online/offline status of ca18 bluebird is unknown

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Originally Posted by immigymp

So true the spoon feeding but I guess the sr community is not that game to try new things maybe?

Am considering those 184e cams....but wish there was a bit more info out there...

Not sure is serious or trolling.....

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2013-07-29 16:20:53

#160

bummy

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Originally Posted by THOR

31" mud tyres

yeah mud tyres dont help.

i would say my 25hp drop has something to do with the exhaust. that is why i have a new manifold in my hands pictures later.

also the compression is around 140psi on a cold engine. and number one is around 110psi

poor thing is tired.

what are peoples thoughts on the 20v cams? i can get them as people stock them here in aussie. ???

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