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Now I understand, thanks for clarification.
Originally Posted by bbundy
(Post 487461)
My point was the dyno and atmospheric conditions can make a bigger difference allot of the time than turbo size.
My other point. Get more displacement! I ran that same turbo setup on a stock 1.8l with a 99 head it rocked that way too. Boost rise was still smooth and top end power was increasable. I ran a turboed 1.6l for 7 years before upgrading, should have put in the 1.8 from the start. I think the only reason to stick with the 1.6l is if you are building a car for coolness factor more than engine performance. if that were the case I probably wouldn’t bother with a turbo. Id do IRTB,s or something. Bob |
Originally Posted by apariah
(Post 487243)
Your seriously teasing us, I've never seen turbo that large on a 4AGE, and I've seen corollas with both 7M, and 2J swaps. Do you know of any other miata's running your setup with number to back up the claim. I'm not saying your wrong, but before I start putting a ton of stuff on ebay to get a different turbo, I'd like to see some results.
https://www.miataturbo.net/forum/t4097/ This is an mx5 of a very good friend.Believe me is a killer and not too lagy. Is have slower spool than mine i think his boost is full at 5000 rpm and have the older 1.6 that is not too strong like mine.I will phone him to write exactly about his spool and boost. Probably the point is different, maybe we don't care too much about spool becouse we are doing drags only but believe me isn't too big problem.Specially when you get too much power after 5000 rpm you can don't think the slower spool. If i was drifting i had keep my 2560 but in same pressure i dyno my car with 3071 and i had 30hp more than 2560. Most of street races here in Greece are from 2 gear and 50-60km for 400-800 meters. So spool is important some times but never we had problem to the first meters. |
Originally Posted by platinum
(Post 487466)
https://www.miataturbo.net/forum/t4097/
This is an mx5 of a very good friend.Believe me is a killer and not too lagy. Is have slower spool than mine i think his boost is full at 5000 rpm and have the older 1.6 that is not too strong like mine.I will phone him to write exactly about his spool and boost. Probably the point is different, maybe we don't care too much about spool becouse we are doing drags only but believe me isn't too big problem.Specially when you get too much power after 5000 rpm you can don't think the slower spool. If i was drifting i had keep my 2560 but in same pressure i dyno my car with 3071 and i had 30hp more than 2560. Most of street races here in Greece are from 2 gear and 50-60km for 400-800 meters. So spool is important some times but never we had problem to the first meters. Please also post pictures of your car also. Did you use the RX7 transmission also like BIGTURBO? Thanks. |
Thanks for the additional info.
Originally Posted by platinum
(Post 487466)
https://www.miataturbo.net/forum/t4097/
This is an mx5 of a very good friend.Believe me is a killer and not too lagy. Is have slower spool than mine i think his boost is full at 5000 rpm and have the older 1.6 that is not too strong like mine.I will phone him to write exactly about his spool and boost. Probably the point is different, maybe we don't care too much about spool becouse we are doing drags only but believe me isn't too big problem.Specially when you get too much power after 5000 rpm you can don't think the slower spool. If i was drifting i had keep my 2560 but in same pressure i dyno my car with 3071 and i had 30hp more than 2560. Most of street races here in Greece are from 2 gear and 50-60km for 400-800 meters. So spool is important some times but never we had problem to the first meters. |
Originally Posted by sixshooter
(Post 487563)
Your friend (BIGTURBO) made 380hp on his old turbo. Can you get him to post his new dyno graph with his new horsepower? I would love to have an update on his beautiful car.
Please also post pictures of your car also. Did you use the RX7 transmission also like BIGTURBO? Thanks. We haven't dyno yet the car becouse he is tuning it to the road alone, but when i finished mine we will do to many tests. :P About the transmission, no we haven't the same modification i bought from here an adaptor plate and a rx7 fc II housing from a member. The reason was only the money becouse the modificiation like bigturbo is expensive. I have already post some photos to the previous pages. |
hello to everyone. I cannot understand where is the problem here?? Why so offence to big turbo miata's choices?
And for some guys, the GT3076R ATP turbo at 1.6lt engine fully built and HKS st2 cams is 25psi at 4800. 4800 until 7800 is very nice for drag use. Much better from 2800-4800 with 2554's at BPs. ;) |
I don't think most of the guys here see anything wrong with larger turbo's, most of us want as much power as we can produce with out overpowering the miata chassis. However many of us, do more than just drag race, and a lot of the owners here need a broad range of power. Considering the road races, TT, Auto-Xers, and even the drifters.
So although the idea of the additional power is appealing, the current logic seems to be if you want to run a turbo that size you really need to swap in a 1.8, and to make the most of it you need to build that 1.8. The idea that you were making the power you predicted on a 1.6 appeals to most of us because it could mean we don't do a 1.8 or even an LS1 swap to break 300-350 whp or more in a miata. Well at least this is my opinion on the matter.
Originally Posted by BIGTURBO
(Post 487714)
hello to everyone. I cannot understand where is the problem here?? Why so offence to big turbo miata's choices?
And for some guys, the GT3076R ATP turbo at 1.6lt engine fully built and HKS st2 cams is 25psi at 4800. 4800 until 7800 is very nice for drag use. Much better from 2800-4800 with 2554's at BPs. ;) |
I agree with you when you going with larger turbos you can doing only good drags and a litle bit of drift.
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Originally Posted by wineguzzler
(Post 485641)
FWIW...
I am in the process of finishing a long term 1.6 project. Damn 3 year divorce and car being in her name has put a damper on project. Title in my name and moving forward finally! Here are some details.... 3071 with .63 turbine and 4" inlet BEGI cast manifold with Tial 38mm 3" all the way with wastegate tube running about 20" before entering exhaust, custom job by Corky. Shitload of head work: +1mm valves, Supertechs strongest double springs & Ti retainers. Full port rework flowing 285 cfm at .400 lift. 274 duration intake & 266 exhaust with .395 lift. Chrysler 300m coils with M&W Pro 12 CDI ACT pro lite flywheel with an SPEC stage 3+ Aluminum PP that has been modified for more torque holding power. MSM 6 Speed & Rear end 3.63 gears. I dont expect this to spool till at least 4500rpm due to the agressive cams 285CFM @ .400 YOUR ON FUCKING CRACK!!!!!!!! thats what v-tec heads flow, and the shit on miata heads and that at .550 lift. i flowed my fully ported 1mm+ valve 99 head up to .500 lift i got 247 cfm @ 28" of water. no fucking way your 1.6 head is doing that. and if it is...... you have 0 velocity |
Originally Posted by ctdrftna
(Post 488367)
285CFM @ .400 YOUR ON FUCKING CRACK!!!!!!!!
thats what v-tec heads flow, and the shit on miata heads and that at .550 lift. i flowed my fully ported 1mm+ valve 99 head up to .500 lift i got 247 cfm @ 28" of water. no fucking way your 1.6 head is doing that. and if it is...... you have 0 velocity |
Today we start to tune my car. First impressions are very good.We stop at 29 psi because we had problem with the spurg plugs. So i will change them with colder and i will have a better result.So the second dyno is that with the problem. I haven't an opinion to the road yet because here is raining all day.
First dyno at 26 psi Second at 29 psi http://img300.imageshack.us/img300/4...psidyno.th.jpghttp://img300.imageshack.us/img300/5...psidyno.th.jpg |
I think it says 354 horsepower at 7300 rpm on the second chart. Really good numbers. What octane is your fuel and what are you using for ignition coils?
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Originally Posted by sixshooter
(Post 489834)
I think it says 354 horsepower at 7300 rpm on the second chart. Really good numbers. What octane is your fuel and what are you using for ignition coils?
and 337whp at 7240rpm and 38.4 kg of torque at 26psi. I only have the red magnecors and nothing else something special. fuel 100 octane |
Numbers seem low for 29 pounds of boost...
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Originally Posted by jtothawhat
(Post 489843)
Numbers seem low for 29 pounds of boost...
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Originally Posted by jtothawhat
(Post 489843)
Numbers seem low for 29 pounds of boost...
This usually happen at dynapacks |
Just 3 psi's can make really huge difference!
Great output George! |
50 hp difference is extreme between dyno's I think, I know Mustang dynos are around 15% lower than dynojets. My car was dynoed on a dynojet--the same one that the worlds highest hp evo uses.
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Originally Posted by jtothawhat
(Post 489851)
50 hp difference is extreme between dyno's I think, I know Mustang dynos are around 15% lower than dynojets. My car was dynoed on a dynojet--the same one that the worlds highest hp evo uses.
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I don't know about the dynos i know about our engines.
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