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The Terminator
Turbo Cobras
What size turbo?
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<blockquote data-quote="Digital" data-source="post: 10356766" data-attributes="member: 66214"><p>Omg someone who posted all the info we actually need. Yay.</p><p></p><p>Turbo ratings are flywheel ratings. So a 750hp turbo will not get you 750rwhp. Maybe 600-650rwhp.</p><p>As a rule of thumb you want advanced lightened wheels for spool time and what ever the best bearings the company you pick offers. That's usually going to be dual ball bearing.</p><p></p><p>After you hand over your college fund for the better bearings and wheel it will come down to coating and porting. Some brands offer coating which will increase the longevity of the unit and help with heat distribution.</p><p>Porting is usually not an option but if offered will add more air flow and power to the unit. Both options are usually not cheap at all.</p><p>I would personally spring for the bearing and wheel upgrade. The coating to me isn't THAT big of a deal and for your setup the porting is probably too over the top for the $$ involved vs gains.</p><p></p><p>A big thing about turbos is warranty. There are a few statistics on which companies have the most recalls. It's usually between 4-9%. Some companies offer a warranty, some don't. For instance borg warner has one of the lowest returns. Like 2%. But offers no warranty.</p><p></p><p>Now that we got the "options" covered we can look at the actual turbo itself.</p><p>Spool time is going to have a lot to do with intake vs exhaust side of the unit.</p><p>I'm not going to get into the deep meat of how a turbo works. You can google that and learn more then I could type in a week about them just in the first couple websites that come up.</p><p>You'll want to pick a turbo with a ~1000hp rating most likely. That will probably be a 76 with a big a/r or a 78 with a smaller a/r. I like going a bit fatter so if it was me I'd pick a 78 with a .96 a/r. But you could probably get away with a 76 with a .96 a/r and be right where you want.</p><p>Also if you really know spot on what you want for your car you can fill out a sheet for most of the turbo companies and they will graph out a flow chart to get your spool time where you want and your peak hp where you want at the boost level you desire.</p><p></p><p>I can't really comment on the model of turbo you might want to look into for that. I would call the main 3 companies and tell them exactly what you want and the model and "options" that will get you your desired results. Then come back with that to the forums and we'll tell you if the advise was good and which brand to go with.</p><p></p><p>P.S. I spend 30 min writing a reply and Mr.GSXR1000 says it all in a sentence pretty much lol.</p></blockquote><p></p>
[QUOTE="Digital, post: 10356766, member: 66214"] Omg someone who posted all the info we actually need. Yay. Turbo ratings are flywheel ratings. So a 750hp turbo will not get you 750rwhp. Maybe 600-650rwhp. As a rule of thumb you want advanced lightened wheels for spool time and what ever the best bearings the company you pick offers. That's usually going to be dual ball bearing. After you hand over your college fund for the better bearings and wheel it will come down to coating and porting. Some brands offer coating which will increase the longevity of the unit and help with heat distribution. Porting is usually not an option but if offered will add more air flow and power to the unit. Both options are usually not cheap at all. I would personally spring for the bearing and wheel upgrade. The coating to me isn't THAT big of a deal and for your setup the porting is probably too over the top for the $$ involved vs gains. A big thing about turbos is warranty. There are a few statistics on which companies have the most recalls. It's usually between 4-9%. Some companies offer a warranty, some don't. For instance borg warner has one of the lowest returns. Like 2%. But offers no warranty. Now that we got the "options" covered we can look at the actual turbo itself. Spool time is going to have a lot to do with intake vs exhaust side of the unit. I'm not going to get into the deep meat of how a turbo works. You can google that and learn more then I could type in a week about them just in the first couple websites that come up. You'll want to pick a turbo with a ~1000hp rating most likely. That will probably be a 76 with a big a/r or a 78 with a smaller a/r. I like going a bit fatter so if it was me I'd pick a 78 with a .96 a/r. But you could probably get away with a 76 with a .96 a/r and be right where you want. Also if you really know spot on what you want for your car you can fill out a sheet for most of the turbo companies and they will graph out a flow chart to get your spool time where you want and your peak hp where you want at the boost level you desire. I can't really comment on the model of turbo you might want to look into for that. I would call the main 3 companies and tell them exactly what you want and the model and "options" that will get you your desired results. Then come back with that to the forums and we'll tell you if the advise was good and which brand to go with. P.S. I spend 30 min writing a reply and Mr.GSXR1000 says it all in a sentence pretty much lol. [/QUOTE]
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