Sierra DOHC 8v Turbo Selection Help
08-11-2010, 10:03 PM
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Sierra DOHC 8v Turbo Selection Help
hi all 
Max RPM 7000
Which one should I choose for Sierra 2.0 DOHC 8v ,GT28R,GT30R,GT35R
Max RPM 7000
Which one should I choose for Sierra 2.0 DOHC 8v ,GT28R,GT30R,GT35R
Last edited by mhs; 08-11-2010 at 10:04 PM.
09-11-2010, 05:19 PM
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I use T3/T4 63 A/R, External Wastegate 28 PSI Boost now
3500 7000 rpm range
I would like a big turbo
I want to with a big turbo, low boost ,high-TORQ
10-11-2010, 11:05 AM
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Less than 28psi? the turbo you have is quite large for a 2 litre, i had the same on my 2 litre 8v zvh, was a lot of lagg and no power until 4000 rpm, what is the reason for changing turbo?
10-11-2010, 11:07 AM
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A t34 .48 would give you similar power but much more low down torque and drivability. At28 is a bit small IMO, based on a t25 footprint.
10-11-2010, 02:41 PM
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Sample : GT30R - 3500 7200 RPM - 15 PSI , may be more of a power
1.6 honda civic uses GT35R
10-11-2010, 02:43 PM
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honda revs to 9000 rpm though and the head flows much better, a bigger turbo may not come in till 4500 or even 5000 rpm, then you will loose low down torque and power, and im not sure it will make the power at lower boost even if it is bigger.
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10-11-2010, 02:47 PM
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10-11-2010, 02:50 PM
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10-11-2010, 03:20 PM
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I love twinky ,I do not want Cosworth yb
10-11-2010, 03:47 PM
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not enough over 5800 RPM
I'm looking for a powerful turbo, Up to 5800RPM
http://www.streetfire.net/video/ford...st_2079982.htm
10-11-2010, 04:50 PM
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11-11-2010, 03:04 PM
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it's a hybrid hx35 with a smaller turbine should spool it by 4000 rpm . 3 bar of boost if needed i'll run it at 2.4 bar [if i can get it on pump gas]
11-11-2010, 04:38 PM
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12-11-2010, 05:39 AM
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12-11-2010, 05:28 PM
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13-11-2010, 05:14 AM
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285cams on a turbo car. std dohc drives std 244 degrees and 10.5 mm lift.
to get low down power then abaut std degrees and more lift. ive mounted 11.55 lift regrind cams on a NA dohc with out problems.
a dohc are not a rpm engine. but a high tourque engine.
last dohc ive made for a friend made 150NA hp with out ajustment and 200nm.
pullede all the way up to 7000rpm
there are a lot of flow to get in the head.
were are you now with HP?
to get low down power then abaut std degrees and more lift. ive mounted 11.55 lift regrind cams on a NA dohc with out problems.
a dohc are not a rpm engine. but a high tourque engine.
last dohc ive made for a friend made 150NA hp with out ajustment and 200nm.
pullede all the way up to 7000rpm
there are a lot of flow to get in the head.
were are you now with HP?
13-11-2010, 09:12 AM
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13-11-2010, 07:02 PM
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285cams on a turbo car. std dohc drives std 244 degrees and 10.5 mm lift.
to get low down power then abaut std degrees and more lift. ive mounted 11.55 lift regrind cams on a NA dohc with out problems.
a dohc are not a rpm engine. but a high tourque engine.
last dohc ive made for a friend made 150NA hp with out ajustment and 200nm.
pullede all the way up to 7000rpm
there are a lot of flow to get in the head.
were are you now with HP?
to get low down power then abaut std degrees and more lift. ive mounted 11.55 lift regrind cams on a NA dohc with out problems.
a dohc are not a rpm engine. but a high tourque engine.
last dohc ive made for a friend made 150NA hp with out ajustment and 200nm.
pullede all the way up to 7000rpm
there are a lot of flow to get in the head.
were are you now with HP?
Just think of 285 cams
stock cam, stock crank with I use 7000rpm 28PSI boost no problem
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