Boganspeeds Grunt Injection - LS1 conversion
Rennlist Member
Joined: May 2009
Posts: 2,762
Likes: 13
TBF, piston slap, no more timing belt to snap. Wasn't there some crank bearing oiling issue with the 928 motors? Also stick in an LS motor and afford yourself rear weight removal without upsetting the balance.....2 birds with an LS Block
Race Director
Joined: Sep 2007
Posts: 12,162
Likes: 383
From: Johnson City, TN
Actually, the 32V cars run great, very smooth and powerful, just not worth the headache compared to the bulletproof 16V and especially the Euro 16V. The timing belt isn't really an issue unless you ignore one. For years. Or get hold of one that a flipper tweaked, doing part of the job, not all of it.
I've had a lot of Chevy V8's, most recently 92, 95, 99 and a 2001 6.0L. Bleh.
Was helping my exhaust guy today with a 2001 Tahoe. He started it up and we were laughing about the piston slap. What a mess.
I've had a lot of Chevy V8's, most recently 92, 95, 99 and a 2001 6.0L. Bleh.
Was helping my exhaust guy today with a 2001 Tahoe. He started it up and we were laughing about the piston slap. What a mess.
Racer
Joined: Mar 2009
Posts: 277
Likes: 0
From: Iowa
Looks like a fun project, should be interesting to see the results!
Anyone ever consider dropping in an LQ9 to ameliorate this problem? From my understanding its pretty much an LS engine with an iron block that got put into GM's trucks. still makes 345 hp and iirc bolt-ons can get you up to 510 (according to hot-rod magazine anyway).
Anyone ever consider dropping in an LQ9 to ameliorate this problem? From my understanding its pretty much an LS engine with an iron block that got put into GM's trucks. still makes 345 hp and iirc bolt-ons can get you up to 510 (according to hot-rod magazine anyway).
Nordschleife Master
Joined: Apr 2006
Posts: 8,936
Likes: 3
From: theporscheconnection.com
Looks like a fun project, should be interesting to see the results!
Anyone ever consider dropping in an LQ9 to ameliorate this problem? From my understanding its pretty much an LS engine with an iron block that got put into GM's trucks. still makes 345 hp and iirc bolt-ons can get you up to 510 (according to hot-rod magazine anyway).
Anyone ever consider dropping in an LQ9 to ameliorate this problem? From my understanding its pretty much an LS engine with an iron block that got put into GM's trucks. still makes 345 hp and iirc bolt-ons can get you up to 510 (according to hot-rod magazine anyway).
im out
Racer
Joined: Mar 2009
Posts: 277
Likes: 0
From: Iowa
Rennlist Member
Joined: Feb 2010
Posts: 1,350
Likes: 79
From: Tucson,AZ
The LQ9 iron block is 88 pounds heavier than the LS aluminum block. But the LQ9 has a lower compression (9.5:1 IIRC) so need a supercharger to get the HP up. Or swap pistons with a higher CR.
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Burning Brakes
Joined: Aug 2009
Posts: 901
Likes: 15
From: San Francisco
Yes perhaps, Ive never bothered with the 2V
In general Porsche makes great cars with great engines, the underpowered 944's and early US 928's perhaps not so great. But the 32V is still an awesome powerplant and short of some very exotic V8 or V12 I would never swap out a 32V M28 for any reason.
this no make sense..... say you what..... no speakeeee whatever you say
In general Porsche makes great cars with great engines, the underpowered 944's and early US 928's perhaps not so great. But the 32V is still an awesome powerplant and short of some very exotic V8 or V12 I would never swap out a 32V M28 for any reason.
this no make sense..... say you what..... no speakeeee whatever you say
Steve
Nordschleife Master
Joined: Apr 2006
Posts: 8,936
Likes: 3
From: theporscheconnection.com
I swore I would NEVER buy an American car. However, with the recent mishap of my car, I read up quite a bit about an alternative engine. As sophisticated as the S4 engine was, it is nowhere near the reliabillity of the new generation Chevy LS engines. People brush them off as just some "pushrod" dinosaurs but in fact they are very elegantly designed. The result is a series of extremely efficient and powerful engines. I would love to have a LS3 E-Rod package running in my 928. With 430hp and 430 foot-pound of torque, I only see that it is a superior engine over my S4 engine. Certainly some people will just resist that idea, but to me, a modern and much more potent power plant with a gorgeous 928 body spell a very desirable package. I believe this project will end up transforming a great car to a phenominal machine. Can't wait to see more updates.
Steve
Steve
400 plus HP in a very compact light package
Burning Brakes
Joined: Aug 2009
Posts: 901
Likes: 15
From: San Francisco
The Chevy LS3 E-Rod makes it very easy to transplant at the same time emission legal in all 50 States.
http://www.youtube.com/watch?v=GRNW-...layer_embedded
Check it out.
Steve
Burning Brakes
Joined: Aug 2009
Posts: 901
Likes: 15
From: San Francisco
http://www.crateenginedepot.com/stor...tSzvsW7tFoACFH
On top of that you can buy all the good GM AC accessories, alternator, and few other things for very reasonable prices. See, my car got a messed up AC system that I want to change out anyway. One thing I have to give GM is their superb AC components which are very cold and reliable. The kit from Renegade Hybrids will run something like $4000 if you want everything including the high efficiency radiator. Figure about 50 to 60 hours of labor for the conversion. While you are at it, change out the TT for rebuild and get the tranny tuned up, one gets a killer Porvette. Then you get the GM plug and play supercharger kit to add another 120 horses. For under $40k, you build yourself an absolute King of the Road with the 928 look to boot.
That fat/flat torque curve is impressive.
Steve
On top of that you can buy all the good GM AC accessories, alternator, and few other things for very reasonable prices. See, my car got a messed up AC system that I want to change out anyway. One thing I have to give GM is their superb AC components which are very cold and reliable. The kit from Renegade Hybrids will run something like $4000 if you want everything including the high efficiency radiator. Figure about 50 to 60 hours of labor for the conversion. While you are at it, change out the TT for rebuild and get the tranny tuned up, one gets a killer Porvette. Then you get the GM plug and play supercharger kit to add another 120 horses. For under $40k, you build yourself an absolute King of the Road with the 928 look to boot.
That fat/flat torque curve is impressive.
Steve
Last edited by whiteNSXs; Oct 15, 2010 at 12:27 PM. Reason: typo
