01 GA 3400 Rebuild Again

[john_V63400]

Whats the difference in irridium or copper from stock. And whats the advantages of going one step colder, and last but not least where can I order those things. Thanks. I know its alot, but Hey I dont know????

[john_V63400]

would these plugs work? Can somebody look at them and tell me thanks

http://cgi.ebay.com/ebaymotors/NEW-GM-FUEL-INJECTOR-02-04-CHEVY-TRAILBLAZER-12569573_W0QQcmdZViewItemQQcategoryZ33554QQihZ006QQitemZ160079373730QQrdZ1QQsspagenameZWD1V

[geldartb]

yeah those plugs will work. same ones as the 2000+ injectors. so youll be fine.

[blackbombshell95]

Sonic test the block before you bore it over anymore. Every block is different.

[john_V63400]

My Machine Shop Repower are going to bore my block another .020 on monday to make sure the cylinder will clean up. Monday morining Im going to see if they have the capability to sonic test it. Im almost sure it will be fine,
Ive heard of some guys going .060 over on those blocks. Im only at .040 after this .020 bore.

Im going to buy that DHP set up from the guy whos demoding is monte carlo.
I cant thank him enough for saling that to me.

And I ordered those injectors off e-bay.

All thats left is on monday to see if .020 will be good enough and go from there and order my pistons.

Oh yeah and to order my MAF from the dealer and throw that back in the mix.

But where should I put it back in at..

My setup goes...K&N Filter....Intake tube.....RSM Blower..Blow Off Valve...throttle Body.

Where should I put it.

[mfuller]

The consensus seems to be K&N -> Vortech -> BOV -> MAF -> TB

[AaronGTR]

This has been covered before... MAF goes in between the throttle body and the BOV so that you don't lose metered air out the BOV. Best place I've found for spark plugs is http://www.clubplug.net/ . The point of going one step colder is to make sure the plug doesn't create a hot spot where you can get pre-ignition. Since you are running boost your combustion temps will be higher and surfaces in the combustion chamber will get hotter. Anything you can do to keep the temps down will give you a bigger safety margin and allow you to run more timing advance which equals HP. Thats another reason not to use platinum plugs in a performance engine. Platinum is designed for long life and it gets hot to keep impurities burned off the electrode so they don't foul up. Iridium tips are smaller so they give a faster hotter spark, and I've found them to last pretty well under mild amounts of boost. Copper are more durable though under extreme conditions like high boost or nitrous use, and they are good conductors so they make a good spark but need to be replaced more often. How good your tune is though and what AFR you run at will determine how fast they get dirty.

[john_V63400]

So when I buy my plugs what properties do I want to look at to tell if they are colder plugs. Do you mean PLatinum is the hottest then irridium is second hottest then copper is the coldest.

[IsaacHayes]

Ordering a MAF might be expensive. Try a junkyard maybe, but need to make sure it's in good condition. Put the MAF before the throttle body, and after the blow off valve.

Super charger - BOV - MAF- Throttle body.

Reason being is you want the MAF to read what the engine is getting. If the maf is before the bov, the computer will flood out when the bov opens, since it thinks you were getting lots of air, but you're not since the bov released it all.

[john_V63400]

please someone answer

So when I buy my plugs what properties do I want to look at to tell if they are colder plugs. Do you mean PLatinum is the hottest then irridium is second hottest then copper is the coldest.

[onefastV6]

Since you are going with mild boost I would go with the Iridium plugs that are one heat range colder than stock.

The following article explains the heat range a little better:

http://www.ngksparkplugs.com/techinfo/spark_plugs/overviewp2.asp?nav=31000&country=US#

[john_V63400]

Awsome that article helped alot, thanks alot.

[AaronGTR]

Yeah, colder heat range doesn't really have anything to do with the material it's made out of. It's other factors like the depth around the electrode etc. Best thing is to call the plug manufacturer to get a part number for plugs that are colder than stock, or get a number from someone here that knows them. I've used denso iridium plugs #IT20 that are one range colder than stock. Don't know the number for NGK's or anything else.

[gectek]

autolite vanilla coppers are 606 stock i think and 605 is one range colder, that is .060 gap, the 100 series is the .040 gap, just change last # down 1 to go 1 range colder

[kflo 93 gt]

Anyone have the number for the 1 step colder autolite copper for a 2nd gen 3.1? No biggie if not, I'll look later, I've just got to head back to school at the moment. Not like the Autolite system of numbering is hard to read.