damn matt that freakin sucks!!

 

YEa oh well, not too pissed about it.
Going to have an elbow welded on to the WG flange.

 

good idea. should help with any boost creep as well

 

matt, the turbo is causing problems? shocker.

but your car is properly tuned, right?

 

I'm glad I can drive my car everyday with no problems

 

^x2 hahah

 

Uh what?
The turbo is 100% fine, this would be an issue with the manifold as you can see in the pictures? So that wouldn't be a shocker since it's fine right?

Car is tuned but why would the tune have anything to do with the manifold's physical issues?

I smell your loaded question so just make with it.

 

yes but it is also relatively stock..........

To each their own right?
It's not easy making big power, those are things some of us like and know what comes with it.

 

also?

 

HT Ate my post, lol!

 

ahh i see it now, that is true, alot of people that i know say that when you have a fully built motor you always have to deal with things breaking down especially if you're pushing like 400+

 

Yup and that's what I like, I don't mind the problems, Well I do but it's a good learning experience and I enjoy working on the car.

I enjoy driving a highway missile, these other guys apparently don't and always make that clear.............

 

matt whats your AFR at..?

 

if i had the time and money to spend on building a motor i'd love to go boost, i dont need 400+ but it would be nice to push like 300-350 just for daily driving fun

 

Not trying to be short with you, at all but that is a very complex question.
AFR varies depending on load and RPM's.
At idle it's around 14.2 - 15.0 or so.
Under full throttle it's around 10.5 or so, however I don't have any logs to look at and sure as hell don't stare at the gauge when the cars screaming down the road.

Want to rephrase it so I can answer it better if need be?


That's what we all say! Any amount of power gets old after a while!

 

thats what i keep hearing haha

 

at full throttle your running a little rich dont you think, and if it is fluctuating from 15.0(which is lean btw) to 10.5 (which is way rich) the reason your manifold prolly did that was because of detonation in your manifold, being to rich under pressure..

take that how you want it, and tell me i am wrong,.. and i ll sit here and say i tried to help... take how you want too..

 

I appreciate the input and your on the right track however it's not quite right.
On turbo cars AF will fluctuate a lot! Esp under boost, 10.5 - 11.0 is very normal under full boost in a turbo car.
15.0 isn't that lean, especially for idle and that was just a broad guess, Like I said I don't really have any logs on hand to view.

 

thats not normal under boost, around 12-13.2 is normal under full boost, me and a buddy are pushing 15psi max on a sr20det and it idles at 13.2 and at full boost doesnt goe below 12, your running to rich, and 14.7 is perfect AFR but cars usually run around 14.2 on average.. running over 14.7 is not good. thats plain and simple. like i said if you think i am talking out of my ***, and dont have experience or theoretic knowledge on the matter(seeing as how this is my degree i am in) well then pay no attention.

also if your base fuel map and tune is good and your running the according injectors to your application then your AFR shouldnt be fluctuating that much.

also have turned the boost up to 20 psi on the 240sx, and it never richned out under 11.. on a blitz pre done tune on the black top sr ecu.

 

by "turbo" i meant the turbo system caused problems. Every time i talk to people about boosting honda motors they always say "Well if it's tuned correctly it'll run exactly like an all motor car (blah blah blah)." and it just isn't shocking to me if you have one problem after another even though i'm sure your car is properly tuned. Have you had any boost leaks? that one is a classic.

I'm not trying to kill you or anything, just not shocked that a part of your turbo system failed. i've never seen a header or exhaust manifold blow apart on a car before.

 

^ Please dip into the FI thread!
Your car idling at 13.2 is WAYYYYYYYYYYYYY tooo rich!
Then again EVERY car is different, you do what you know, I'll do what I know.

Also though, like I said these are estimates and I have no reviewed any logs because the car seems to be running fine.

Thanks though!

 

i agree, but i love having torque everyday with no problems.

 

Yes but you seem to be confusing yourself. My car for instance runs fine, just because a weld broke doesn't reflect on the turbo system. It would be the same thing as an all motor cars header breaking. But there isn't as much pressure flowing through an N/A header though but you get my drift.

It is tuned and it runs fine!
No boost leaks, those are silly problems, which people who overlook quality materials like T bolt clamps and good couplers have.

Any car that is attempting to make power WILL have issues, all motor or turbo, plain and simple.

 

oh please. when i had my k20 swapped CRX. Just because i didn't have a turbo doesn't mean i didn't like going fast. But that car was SILLY on back roads too.

*may not have been able to run a fast lap being overpowered and what-not, but it was fun driving a ridiculous car like that around corners...

 

Wasn't directed at you, just at others who preach how awesome what they like is and how what everyone else likes is wrong....