GM's LSx motors to get Direct Injection

clinehall · **Posted:** Tue May 04, 2010 9:26 am

Richard Casto wrote:

I added another item to the "THSCC Topics of DEATH!!"

http://www.thscc.com/phpBB/viewtopic.php?t=4985

"#15 Pushrod vs. OHC engines. Particularly the Chevy LSx series found in the Corvette. "

Without getting into the Pushrod vs. OHC rathole, I think the addition of direct gas injection is a move forward. I see most if not all new auto gas engine designs doing this in the near future.

What will be interesting is the impact on ALMS/LMS racing. The GT2 class does not allow direct injection unless the stock car does. Porsche runs a direct injection engine in ALMS while Corvette does not. Corvette was using direct injection in GT1 (was allowed in GT1 even if stock car did not have it) and would love to have it back in GT2.

First Newbies have to wear arm bands like Jews in Nazi Germany, now censorship!

Jason Mauldin · **Posted:** Tue May 04, 2010 9:28 am

I don't think the injectors will be that big of an issue. That information and those parts will trickle down from the race teams that are using them. Plus GM, historically supports the groups that like to swap engines, so they will work out solutions for the engines.

The lines and the fuel tank are where I think people will have trouble supporting that kind of pressure.

Bernie Baake · **Posted:** Tue May 04, 2010 9:54 am

Don't know how they are going to do it in gas engines but in diesel engines the high pressure fuel lines are short runs from the hp pump to the cylinders and are attached to the engine. Both hp pump and fuel lines are actually an intergrated part of the engine. Feed and return lines and the fuel tank are all low pressure items. some engines like detroit diesel use mid pressure lines from the pump to the injector and develop the high pressure in the Push rod driven injector. In any case get ready for some extravagantly priced engines. I sold two ten year old cummins 315 hp diesels last year for forty K+ for the pair and the buyers were happy to get them that cheap.

Ryan Holton · **Posted:** Tue May 04, 2010 9:58 am

DickRasmussen wrote:

Too bad GM doesn't take advantage of the compact size by putting it in a relatively small car . . . smaller than a Vette but bigger than a Miata. Ideally a nice sloped hatchback (like an original Datsun Z) with a load area big enough to carry a set of autocross tires/wheels plus a small floor jack and air tank. (The fact that I could carry a passenger AND tires, etc. inside my 260Z was a big part of getting hooked on autocrossing). Ditto in later years with my 5.0 Mustang hatch.

Dick

I think Dick is trying to say "Why didn't they put it in the Solstace/Sky?"

Marty Howard · **Posted:** Tue May 04, 2010 10:01 am

Ryan Holton wrote:

DickRasmussen wrote:

Too bad GM doesn't take advantage of the compact size by putting it in a relatively small car . . . smaller than a Vette but bigger than a Miata. Ideally a nice sloped hatchback (like an original Datsun Z) with a load area big enough to carry a set of autocross tires/wheels plus a small floor jack and air tank. (The fact that I could carry a passenger AND tires, etc. inside my 260Z was a big part of getting hooked on autocrossing). Ditto in later years with my 5.0 Mustang hatch.

Dick

I think Dick is trying to say "Why didn't they put it in the Solstace/Sky?"

Well, a few were put in them.

Jason Mauldin · **Posted:** Tue May 04, 2010 10:11 am

Bernie Baake wrote:

In any case get ready for some extravagantly priced engines. I sold two ten year old cummins 315 hp diesels last year for forty K+ for the pair and the buyers were happy to get them that cheap.

IMO, this is probably where most of the focus of GMs research will be. If GM pulls this off, the technology will be in 100x the number of vehicles that your cummins diesel engine is in. That customer base isn't going to pay that much money for an engine. GM has to make it cheap, or it won't make it into their primary truck line.

Jason Mauldin · **Posted:** Tue May 04, 2010 10:16 am

Marty Howard wrote:

Ryan Holton wrote:

DickRasmussen wrote:

Too bad GM doesn't take advantage of the compact size by putting it in a relatively small car . . . smaller than a Vette but bigger than a Miata. Ideally a nice sloped hatchback (like an original Datsun Z) with a load area big enough to carry a set of autocross tires/wheels plus a small floor jack and air tank. (The fact that I could carry a passenger AND tires, etc. inside my 260Z was a big part of getting hooked on autocrossing). Ditto in later years with my 5.0 Mustang hatch.

Dick

I think Dick is trying to say "Why didn't they put it in the Solstace/Sky?"

Well, a few were put in them.

There's an aftermarket company that will make one for you. Supposedly, GM also has a few that they made themselves, for testing purposes.

Marty Howard · **Posted:** Tue May 04, 2010 10:34 am

BTW,

Tunners have not too many issues with the 2.0T and 2.2T D/I engines so far. They also tore up T2 in the Solstices.

Les Davis · **Joined:** Fri Aug 29, 2003 2:04 pm **Posts:** 2059

Richard Casto wrote:

I added another item to the "THSCC Topics of DEATH!!"

http://www.thscc.com/phpBB/viewtopic.php?t=4985

"#15 Pushrod vs. OHC engines. Particularly the Chevy LSx series found in the Corvette. "

Wow, "topic of death" status on the first page of the thread, that's got to be a record.

Les Davis · **Joined:** Fri Aug 29, 2003 2:04 pm **Posts:** 2059

Jason Mauldin wrote:

Marty Howard wrote:

Ryan Holton wrote:

DickRasmussen wrote:

Too bad GM doesn't take advantage of the compact size by putting it in a relatively small car . . . smaller than a Vette but bigger than a Miata. Ideally a nice sloped hatchback (like an original Datsun Z) with a load area big enough to carry a set of autocross tires/wheels plus a small floor jack and air tank. (The fact that I could carry a passenger AND tires, etc. inside my 260Z was a big part of getting hooked on autocrossing). Ditto in later years with my 5.0 Mustang hatch.

Dick

I think Dick is trying to say "Why didn't they put it in the Solstace/Sky?"

Well, a few were put in them.

There's an aftermarket company that will make one for you. Supposedly, GM also has a few that they made themselves, for testing purposes.

http://www.mallettcars.com/solstice-conversion.htm

They are "limiting production" to just 100 and yet 4 years later there are packages still available. At a base price of *just* $22K + price of car, I'm astonished that they didn't just fly out of the shop.

steve remchak · **Posted:** Tue May 04, 2010 1:37 pm

Les Davis wrote:

Richard Casto wrote:

I added another item to the "THSCC Topics of DEATH!!"

http://www.thscc.com/phpBB/viewtopic.php?t=4985

"#15 Pushrod vs. OHC engines. Particularly the Chevy LSx series found in the Corvette. "

Wow, "topic of death" status on the first page of the thread, that's got to be a record.

i believe Richard has become more proactive over the years. either that or i am on some watch list. hmmnmnmnmn

Jason Mauldin · **Posted:** Tue May 04, 2010 1:42 pm

steve remchak wrote:

Les Davis wrote:

Richard Casto wrote:

I added another item to the "THSCC Topics of DEATH!!"

http://www.thscc.com/phpBB/viewtopic.php?t=4985

"#15 Pushrod vs. OHC engines. Particularly the Chevy LSx series found in the Corvette. "

Wow, "topic of death" status on the first page of the thread, that's got to be a record.

i believe Richard has become more proactive over the years. either that or i am on some watch list. hmmnmnmnmn

He just jealous that Porsche doesn't make an engine as good as the LSx engines.

:twisted:

Richard Casto · **Posted:** Tue May 04, 2010 2:30 pm

Jason Mauldin wrote:

steve remchak wrote:

Les Davis wrote:

Richard Casto wrote:

I added another item to the "THSCC Topics of DEATH!!"

http://www.thscc.com/phpBB/viewtopic.php?t=4985

"#15 Pushrod vs. OHC engines. Particularly the Chevy LSx series found in the Corvette. "

Wow, "topic of death" status on the first page of the thread, that's got to be a record.

i believe Richard has become more proactive over the years. either that or i am on some watch list. hmmnmnmnmn

He just jealous that Porsche doesn't make an engine as good as the LSx engines.

:twisted:

I am not going to take the bait.

Regarding the "Topics of Death", it was sometime in the past year in which a thread turned all sideways as soon as we started talking about Chevy pushrod engines. I should have put it on the Topics of Death then, but forgot. This thread just reminded me to do so.

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GM's LSx motors to get Direct Injection

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