Aurora 4.0l / Izuzu 5 speed swap into 88 coupe (Page 52/102)
AJxtcman DEC 16, 07:32 PM

quote
Originally posted by cptsnoopy:


On a side note, do either of you know the difference between the factory L47 and the "massaged" version made specifically for the Shelby Series 1? The Shelby engine can be purchased new for about $3K. I have heard it has different cams and can rev higher. But, I have also heard it was used with a supercharger so they may have lowered the compression ratio a tad. I have no idea if it would be plug and play in my car.



They did not have superchargers on them from Shelby. None of them.
They did have superchargers, but they were dealer installed.
I am 98% sure. I read the Snake Bit book, but it was awhile back

They didn't have different Compression ratios either. I hope that helps you.

[This message has been edited by AJxtcman (edited 12-16-2008).]

cptsnoopy DEC 16, 08:15 PM

quote
Originally posted by AJxtcman:


They did not have superchargers on them from Shelby. None of them.
They did have superchargers, but they were dealer installed.
I am 98% sure. I read the Snake Bit book, but it was awhile back

They didn't have different Compression ratios either. I hope that helps you.




Thank you AJ, from what little I found, the only difference is the Cams. I only saw one reported redline of 6500 so they may still have the stock springs and retainers.
cptsnoopy DEC 16, 08:22 PM

quote
Originally posted by Russ544:


it's not a problem to remove the springs with the head on. just remove the intake cam and offending lifter, set a deep 5/8 or 3/4" socket on the spring retainer and give the socket a modest smack with a hammer. this compresses the spring long enough that the retainers just fall out. I always remove the retainers this way. _replacing_ the retainers will be the harder part however .
you alread know which cylinder is the problem, so just pop those springs off and you'll be able to check the seals as well as checking for excess clearance in the valve guide. I can make you a tool to replace the springs and keepers without too much trouble if you like.

Russ




Thank you Russ,

That will work nicely for what I need to do. I will let you know what I find out about the seal before you make a tool... If I need to pull the head, I'll have the shop install the springs.

charlie
Will DEC 17, 06:50 AM

quote
Originally posted by cptsnoopy:

Thank you AJ, from what little I found, the only difference is the Cams. I only saw one reported redline of 6500 so they may still have the stock springs and retainers.



I thought I'd read that the redline was 7200... That would, however, require a host of new internals.
GSXRBOBBY DEC 22, 09:46 PM
Will, do you think the redline can be adjusted or is that set? Maybe add a rev. limiter if that is a worry!

------------------
Bobby from NW Indiana
93 Northstar and 5 speed Getrag
NEW e-mail address ankerenterprises@yahoo.com
Anker Enterprises L.L.C.

MY 88 Northstar build thread

Will DEC 23, 09:44 AM
What do you mean? Significantly upping the redline of a production engine takes quite a few hard parts. Upping the limiter is totally dependent on what engine management you use.
cptsnoopy JAN 02, 02:37 AM
Speaking of RPM. I received several 500K Ohm trimmers in the mail. Since they were only a couple of dollars each I thought I would get various styles and pick the one that fit the best. I started with a 6 cylinder tachometer having a factory trimmed resistor value of 312K Ohms, so I set the trimmer to 234K Ohms. (314 X .75 = 234)
Hopefully that will be close enough. If not then I will get a 60hz signal from something and calibrate the tachometer.
IXSLR8 JAN 02, 03:02 AM
Right on. I need to do that to my tach too. Where did you get your trimmers?

Still waiting for my new radiator. Hopefully it will get here tomorrow and I can start up on the weekend.

cptsnoopy JAN 02, 02:33 PM

quote
Originally posted by IXSLR8:

Right on. I need to do that to my tach too. Where did you get your trimmers?

Still waiting for my new radiator. Hopefully it will get here tomorrow and I can start up on the weekend.



The one I decided to use was the third one down in the left column (RCV) RJ12CY504

Good luck getting it running!

charlie
cptsnoopy JAN 10, 01:08 AM
Impatiently waiting on the new shoes! I wanted something in 5 spoke that would be easy to keep clean. These have been around a while and others have already used them so I decided to jump on the bandwagon and get a set. Borbet Type FS 17x7 w/38mm offset front and 17x8 w/35mm offset rear.

The tires will be Bridgestone Potenza RE960AS Pole Position 215/45R17 front and 245/45R17 rear. I hope they are good, I just went with the tire that got the best overall survey results. They did not have them both in stock in Nevada so I will get either the front two or the rear two tomorrow and the other two later next week. I guess I can install the 12" brakes now...