SUPERCHARGING AND TWIN TURBO THE LT-5

[WB9MCW]

WE ALWAYS GET THIS SAME ? FROM THOSE WHO WANT MORE SO HERE IS A COMPILATION OF THE VARIOUS COMMENTS AND ?'S ON IT!

http://zr1netregistry.com/forum/showthread.php?t=3016

BETTER OFF TO SC (CENTRIF TYPE NO HOOD NEEDED AND COMPRESSION IS NOT A PROBLEM IF YOU KEEP THE BOOST LOW @ <5 PSI) AN LS1 C5 VETTE IS WHAT MOST END UP DOING.

HERE IS AN EXAMPLE OF ONE>> http://zr1netregistry.com/forum/showthread.php?t=3031

NOW U CAN TURBO AN LT-5 BUT AGAIN BIG $$$

HERE IS A DISCUSSION OF IT>> http://zr1netregistry.com/forum/show...ght=TWIN+TURBO

http://www.speedshopthagard.com/proj...ZR1/index.html


AND A FEW MORE>>>

http://www.geocities.com/MotorCity/Street/8943/

http://www.corvettemagazine.com/2001...king/king1.asp

http://zr1netregistry.com/forum/show...ght=TWIN+TURBO

http://www.turbochargedpower.com/


THIS SHOULD FILL YOU NEED TO KNOW!!! ENJOY

AND WHAT DO YA KNOW ---MY 1,500TH POST HOW APPROPRIATE!!!

[A26B]

Originally Posted by WB9MCW

WE ALWAYS GET THIS SAME ? FROM THOSE WHO WANT MORE SO HERE IS A COMPILATION OF THE VARIOUS COMMENTS AND ?'S ON IT!

BETTER OFF TO SC (CENTRIF TYPE NO HOOD NEEDED AND COMPRESSION IS NOT A PROBLEM IF YOU KEEP THE BOOST LOW @ <5 PSI) AN LS1 C5 VETTE IS WHAT MOST END UP DOING.

Boost is boost regardless of where it comes from, turbo or supercharging. Depending on the engine design, especially head bolt configuration, you may be able to safely run up to 8 psi without internal modification. Unfortunately, the LT5 is not one of those, primarily due to only 4 head bolts per cyl design as compared to other closed deck Chevy engines with 5 bolts/cyl. 5psi boost is about all you can safely run on an LT5.

There are no free rides, but some are cheaper than others.

Supecharging is a parisitic drag on crank horsepower. The power to turn the blower/supercharger/puffer comes directly from the crank. For descriptive and ease of demo purposes only, assume an engine has 400 crank Hp, in normally aspirated configuration. Install a supercharger which requires 50Hp to operate @ 6 psi boost, yielding a Hp increase of 50%, expressed as follows;(400Hp-50Hp)*150% = 525Hp

A turbo derives its power from exhaust gasses. Turbos do not create drag but do reduce engine horsepower in a much reduced way by inducing back pressure on the exhaust, thereby lessening cylinder evacuation efficiency. Once again, numbers are for demo purposes only, but are somewhat relative to supercharging. Install a turbocharger which reduces engine efficiency by 5% (20Hp), operating @ 6 psi boost, yielding a Hp increase of 50% (boost is boost) expressed as follows; (400Hp-20Hp)*150% = 570Hp.

If turbos are better, as in more efficient, why do more folks go with superchargers. Answer, until now, is less cost & simpler installation.

UNTIL NOW: Ron Hanselman & I have formed a new company called Raptor, LLC for the express purpose of developing rear-mounted turbo systems for the C-4 Corvettes, LT5, LT4, LT-1 & L98. Only the Lt5 will be a twin turbo configuration. The others will be single turbo design.

Rear mount systems are much less expensive and much less difficult to install. Our system will be sold in kit form, with everything you need to install it, much like a cat-back exhaust system. There will be optional components. We have a 90 ZR-1 and a 95 LT-1 nearing completion now and our plans are to have them both at Bowling Green for the Gathering.

You may have seen STS Turbos (Squires Turbo Systems) shows on the SPEED channel about the C5 systems. Raptor has an exclusive agreement with them and will be featured on STS's website once our systems are ready for sale.

NOW U CAN TURBO AN LT-5 BUT AGAIN BIG $$$

NOT BIG $$$$ ANY MORE! See above.

[GrayZ]

i'm confused the link..takes us to a car that is listed as blown?
or were you referring to the model??
i'm super excited about twin turbo kit. =D>

[A26B]

My Bad!! I left the likns in that Bryan had in his original post, separated the quotes without adding new "quote" syntax. Fixed now....sorry for the confusion.

[Peaven]

Thanks for the update Jerry, I think many of us have been watching for you and Ron's progress on this project...excellent stuff!

[WB9MCW]

Great news indeed Jerry. Glad we brought the subject up and you made the announcement and the comparison of SC vs Turbo- in the LT-5 case TT.

We look fwd to the future reports. Will the TT work for stock motors at low psi? How much more HP when PnP intake- now add PnP Heads? how abt a stroker like your 415 or 385 with P an P and exhaust mod's. What do you see as the line up hp from a TT from stock to wild and what boost at what mod levels do you envision with your new rear TT design?

It is ironic you bring all this up when I made a comment about your own ZR-1 LPE and a second TT ZR-1 (Paul D's TT) article and Ron piped in abt the correct scoop on your SGC 415 etc--in a way it is like I knew you were planning a TT ---or thinking of it presuming that you do your 415 SGC engine up with a TT kit? -- to wierd-- http://www.zr1netregistry.com/forum/...0029#post10029

If u need a free website (for your new TT venture) MS live essentials office websites are free! I have made two for my biz this last year. Easy to set up and operate even the online store I believe- all free. Check it out-- http://office.microsoft.com/en-us/of...465131033.aspx

my sites: www.apogeeindustriesinc.com and www.wadsworthsales.com

[A26B]

Originally Posted by WB9MCW

We look fwd to the future reports. Will the TT work for stock motors at low psi?

Yes. The LT5 should handle 5 psi boost without issues. Over that and the risk of a blown head gasket is probable.

How much more HP when PnP intake- now add PnP Heads? how abt a stroker like your 415 or 385 with P an P and exhaust mod's. What do you see as the line up hp from a TT from stock to wild and what boost at what mod levels do you envision with your new rear TT design?

Boost capability of rear turbos is the same as front mounted turbos, typically from 5 psi to 18 psi. Engine mods are only limited by $'s and imagination. We do not intend to personally explore all the possibilities as they are obviously many. We'll leave that up to each individual's desires. Horsepower would probably range from 500 rwhp for the low boost, stock engine to 1,000 rwhp for a real monster.

Thanks for your interest!!

[WB9MCW]

Well Ron might be able to post results of various combo's on the forum or on the main site in that existing chart of mod's and times--- all though that is rather old data charts etc. Maybe a new updated on is in order.

Will be exciting to see the results of this I know many who have talked of desire for this type of TT kit. Bravo

[A26B]

Originally Posted by WB9MCW

It is ironic you bring all this up when I made a comment about your own ZR-1 LPE and a second TT ZR-1 (Paul D's TT) article and Ron piped in abt the correct scoop on your SGC 415 etc--in a way it is like I knew you were planning a TT ---or thinking of it presuming that you do your 415 SGC engine up with a TT kit? -- to wierd--

Actually, Z Factor PM'd me regarding the addition of another parted out ZR-1 and the whereabouts of Mark Horner. In that PM, he sent the link for the thread you started about my ZR-1 and asked if it was mine. Glad he did, I need to be here more. Thanks for your kind words about my ZR-1.

[WB9MCW]

No problem Jerry---We like to point out the "special" ZR-1 owners that promote the KOTH and then some here on the forum!!!