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| forbsy |
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hey does anyone know wat 300zx turbos are?
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| EBXR8380 |
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As used in VG30T ? Yes they are T3 .63 A.R .. Slightly bigger than std RB30T / VL Commdore turbo... You'll need two on 6 or 8 cyl...
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| forbsy |
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mmm but would it be worth it or just get a bigger turbo
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| DA22LE |
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forbsy wrote: mmm but would it be worth it or just get a bigger turbo
A lot of work to do a twin turbo.....ask urself why so many skyline owners run one turbo??? one bigger turbo is better......but not in all cases, i guess it depends how much power you want. Cheers Daz 
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| forbsy |
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ive been told that they are a gt25 and good for 180 kws but i mights just get that one for now then upgrade when i want more power
this is what i got told They are T25's, but they are more similar to the CA18 T25's rather than the early SR ones.
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| Mr.Kiss |
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forbsy wrote: ive been told that they are a gt25 and good for 180 kws but i mights just get that one for now then upgrade when i want more power
this is what i got told They are T25's, but they are more similar to the CA18 T25's rather than the early SR ones. LOL!! have you actually seen the size of a T25 turbo?? there f**k tiny, i wouldnt waste my time with one...
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| EBXR8380 |
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Here are my old VG30T turbo's.. These have been hi flowed with steel turbine wheels.. The lower turbo is an SC61 / t3/4 hybrid 600 h.p..
The lower turbo here is the VG30T compressor side.. 
From memory I made about 400 rwhp with these..
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| forbsy |
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thanks looks like ill get them
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| EBXR8380 |
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forbsy wrote: thanks looks like ill get them
Did you not believe me in first post ??
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| DA22LE |
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The following is an extract from Corky Bell's "Maximum Boost"
Quote: An engine with flow capabilities greater than 300cfm (roughly 180cid) can benefit from 2 turbos. Two little turbos can slightly cut lag, as opposed to one large turbo, and allow a better balance of low-speed and top-end performance. Over 350cid, twin turbos become a virtual necessity. Do not accept the idea that twin turbo's are inherently more powerful, as too many other factors are involved.
Hope this helps.  Daz
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| forbsy |
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yeh ok ill just wait nd get a snort kit
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| ltd351T |
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DA22LE wrote: The following is an extract from Corky Bell's "Maximum Boost"
Quote: An engine with flow capabilities greater than 300cfm (roughly 180cid) can benefit from 2 turbos. Two little turbos can slightly cut lag, as opposed to one large turbo, and allow a better balance of low-speed and top-end performance. Over 350cid, twin turbos become a virtual necessity. Do not accept the idea that twin turbo's are inherently more powerful, as too many other factors are involved. Hope this helps. Daz While maximum boost is a great entry level book, that above statement is totally incorrect, with regard to larger engines needing twins, maybe back when he wrote the book, but not these days. |
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| xcabbi |
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Maximum boost was written how long ago now? 30 years? Turbo technology has come a loooooong way since then.
Maybe forbs was given info on the turbo's from the VG30DETT which are waaaaaaay too small for a 4L motor that can spin to 5500rpm. |
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| forbsy |
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lol okay guys oll tell the guy i dont wnt them
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| DA22LE |
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ltd351T wrote: While maximum boost is a great entry level book, that above statement is totally incorrect, with regard to larger engines needing twins, maybe back when he wrote the book, but not these days.
I agree totally, which is even more reason to consider the bad points of twin turboing. If i was turboing a v8, i would go for twins if i had the room, and a single if i didnt. A lot of factors in choosing the "right" set-up. Cheers Daz
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