Thread: Need help with kr

Reduce the boost. Should have gone with a 3.6 on a GEN V blower because that's the same as going to a 3.2 on a GEN 3 blower.

Get a tune as well.

a tune can help, but you'll be cutting timing to reduce the kr. and you'd need to own th etuner to cut the timing as needed.

or run a meth kit or ic.

pulleys are 40 to 50 bucks, buy a larger 3.5 and sell the 3.4 hell a 3.6 would be even safer if your not gonna tune it.

Throw in some new plugs 30k is way to much on coper cores. 6 104s are like 12 bucks. I replace mine every few oil changes but I would not go over 10k on them.

Do you have access to e85? That'll kill it easy. If you don't want to completely switch, you can run a e30-e40 mix.

They won't make any difference. Without an intercooler or better fuel, you will need a bigger pulley.

Originally Posted by 1969n2o

Welt tonight when i clock out in going to put some new plugs in and rry that out fir a night

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Posting from another account, usually under blueguy.

However since the site is ****ed, you get my other half's profile.

You put too small of a pulley on it; bar none. Only thing you'll get away with tuning wise and colder plugs is too low of timing and a slow car. The thing probably would have been faster with headers and an intake with a tune and a stock 3.8" pulley. The misconception with you guys not researching is going to be more expensive when the motor sh1ts the bed. You think the IC is pricey? Wait till it chips a piston and you're putting a motor in.

Friendly advice on what you need to hear, not what you want to hear. Been where you are. Did it for years. Put the stock pulley back on it or get the correct supporting mods. Example: valvetrain mods (cam or rockers), find a used IC system, or have someone that knows what they're doing tune the thing. Don't find some fly by night dyno shop either.

It's not .6" smaller, it's a 3.8" to a 3.4". The GenV doesn't have a 4" pulley.

I didn't call you stupid either; I'm telling you from experience. If you researched it there is plenty of evidence out there telling you to not drop past a 3.6"~ because the 3.6 on a GenV is basically like a 3.3"~ on a GenIII. I ran a 3.2" on a GenV with a 3" downpipe and an intake. However I had E85 and injectors. Simple solution. Otherwise, rockers and a tune should solve it. However 2-3* on a .4" is probably like 7+* on a stock pulley. The smaller the pulley is the issue. Which is why I never recommend doing it first, even with headers. I always say do the pulley drop as the very last thing.

Originally Posted by 1969n2o

Not to sound like a prock, but when i put a mic on my stock oulley, it reads 4.1, i took .1 off for lip around the belt. Idk if its been changed but its a press ob pulley so i doubt it. I wouldnt mind doing rockers but that would have to wait till summer time. And i was aware of the 3.6 being the lowest you can go but like i said, i figured why not try it and see where were at. I was not aware that 2-3* kr is like 7+ on a stock pulley. Kind of figured kr is kr honestly. Im going to wait till the tune gets in (sadly i bought a mail order zzp, due to ****ty tuners in my area, and overkill not ever responding) ill see where that gets me at and chances are ill end up buying a larger pulley. Im also going to go through it with my boss n see if hes got any old school hot rodding tips on cooler combustion chanber temps down. I was pretty bummed when he told me not to go near it with meth as i had been debating making a diy meth kit

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No pulley was a 4.1".

Ever.

KR is KR, but it's exponentially more devastating as you pulley down. There isn't any "old school" tips other than tossing in cold AL103's, and a 160* T-Stat. That's about all you'll get there. Meth is fine. The best way would to be spray it post blower and tap the LIM, but most just do it post MAF, pre-blower.

why not use meth? it works. be best with a boost controller of some sort.