Just took my ka-t out for the first spin and got a few probs...

[zerepdivad]

ok so i just took out my ka-t out for a spin for the first time. I figure i shoudl start out with my setup....

ssac top mount t3 manifoldebay 50 trim turbo with restrictorxs power wastegate with about 7lb springrx7 550cc injectorsproject nissan top feed fuel railnismo adjustable fuel pressure regulatorwalbro 255ebay greddy knockoff bovsmall frount mountz32 mafsemance tune.

OK well my first problem is that i build no boost, i've got my wastegate, fpr, and bov going to the same vacuum source but i just read that i should be getting it off of the exhaust mani or turbo for the wastegates vacuum source.. coudl that be what's causing my problems?

second problem is that after about 3 pulls car dies because the plugs get fouled out and it won't start until i pull the plugs let it sit for about 10 minutes then put in new plugs. I don't have a fuel pressure gauge so i don't know where my fuel pressure is at. But i'm thinking i need to turn down the regulator?

third problem is that i can't rev past 5 grand. AT about 5 grand it feels as if the rev limiter kicks in.

I would keep messing with it but i've got to get ready for work. So i was hoping you guys could give me a few ideas and point me in the right direction.

Another thing i should mention is that right now i don't have any exhaust on it and it's straight off the turbo and i obviously don't have the o2 sensor hooked up. I just took it out for a quick spin to see how it reacted because i've got my exhaust appointment for this weekend.

here's a picture just for fun.... i really need to clean up my engine bay a bit....

Thanks in advance to all who reply.

[240sxvaj]

First your maf is wayyy toooo close. it should be about 12inches away from the turbo or it will give you a lot of problem while driving. second you dont guess when setting up fpr, get a gauge. frsport sells for about 60bucks. The rev limit feeling that you are getting should be boost leak. check all pipin and make sure it is connected. Ebay turbo hummm....dont know how reliable it is. You can run a jgs vacuum block where your breakbooster line and use that for boost. i've running the block for about a yr and no problem.

Edit: Are you running multiple T fitting on one vacuum line? If you are i heard it isnt a good way to do unless if it is a big vacuum line like Breakbooster line.

try this out and see if it helps.

[Florida240sx]

Where is your vacuum source? I use fpr line. T'd into it for bov wastegate and boost gauge then the other end is the fpr. Not a single problem. Sounds like you got a boost leak somewhere. Or could be the turbo, bov etc. Do a boost leak tester. What are your plugs gapped at? That is probably your rev limit.

[zerepdivad]

Where is your vacuum source? I use fpr line. T'd into it for bov wastegate and boost gauge then the other end is the fpr. Not a single problem. Sounds like you got a boost leak somewhere. Or could be the turbo, bov etc. Do a boost leak tester. What are your plugs gapped at? That is probably your rev limit.

My vacuum source is the fpr line. i've got the wastegate, bov, gauge, and fpr on the same vacuum source. My plugs are gapped ast stock which i believe is .044 And i'm running stock autolite plugs. *cheap ones* I'll check over all my piping and retighten down all the clamps and everything.

Another thing i should mention is that i don't even hear the bov "go off"

and 240sxvaj i am running multiple tee fittings in total 2 of them.

Another question i've got for you guys is my bov has a "vacuum nipple" on the fron tand the rear and from what i've seen people run they only ouse the front one.... is that correct or should i be using both and giving them both vacuum?

Another thing is that on the wastegate there also are 2 parts where i can thread in a nipple for vacuum and i was told i only need to use the one on the back of the wastegate and just leave the one on top alone is that correct?

Sorry for all the questions.

Thanks for the quick replies guys!

[240sxvaj]

Based on what i remembered, i didnt hook up my wastegate and still able to hear my bov. i have HKS bov and stock t-25, only have one wastegate nipple for vac and one nipple for bov. i heard bad things about knockoff bov, can give you boost leak. And spark plugs are a must, you can go w/ NGK bkr7e something like that.

[zerepdivad]

Based on what i remembered, i didnt hook up my wastegate and still able to hear my bov. i have HKS bov and stock t-25, only have one wastegate nipple for vac and one nipple for bov. Honestly i heard bad things about knockoff bov, can give you boost leak.

Yeah i knwo what you mean actually to tell you the truth my friend had this same style bov on his eclipse and it boost leaked like crazy.... but he bought his used from some weirdo. this one is brand new but i am starting to think it could be part of the problem...

[240sxvaj]

What is your boost gauge reading for vac and boost? It should have readings of 18-20 for vac while idle, if not then you have a vac leak.

[WDRacing]

Don't take this the wrong way...but you're fvcking this up.

Stop doing anything running this until it's ALL finished.

Get a downpipe.Install the O2.Get a fuel pressure gauge and set the fuel pressure.Change your oil because you've got fuel in it by now.Change your plugs, get one heat range colder.

You're almost there, I don't want to read about you breaking something.

WD

[zerepdivad]

Don't take this the wrong way...but you're fvcking this up.

Stop doing anything running this until it's ALL finished.

Get a downpipe.Install the O2.Get a fuel pressure gauge and set the fuel pressure.Change your oil because you've got fuel in it by now.Change your plugs, get one heat range colder.

You're almost there, I don't want to read about you breaking something.

WD

yeah i know i just got anxious to see if it'd at least move under a load with the injectors rail and fpr, and emance tune.. I'm not running it again til i get everything else on it. What should i set the fuel pressure to?

[VeloceDrift]

yeah i would listen to WD He knows his sh*t when it comes to Ka-T's, i know because he has hleped me out alot. ok enoguh with the as* kissin;) anyway i just got my ka turboed and i bout a knock off turboXS from ebay for fourty bucks. Long story short about a day after my car was running i ran to the local Summit Racing and picked up a real TurboXS TypeH Bypass BOVamd its amazin. Only like $180 too.

[zerepdivad]

Don't take this the wrong way...but you're fvcking this up.

Stop doing anything running this until it's ALL finished.

Get a downpipe.Install the O2.Get a fuel pressure gauge and set the fuel pressure.Change your oil because you've got fuel in it by now.Change your plugs, get one heat range colder.

You're almost there, I don't want to read about you breaking something.

WD

so wd i got a few questions that i hope you'd be willing to answer then...what should i set my fuel pressure at?On my wastegate which vacuum nipple should i use the one on the back or the one on the top or both?And on my bov which should i use there are 2.Is it ok to have my wastegate, fpr, boost gauge, and bov all going to the same vacuum source? I read that the wastegate is better to get vacuum from the turbo itself? IS that true?What plugs do you recommend and what should i gap them at?Any specific fuel pressure gauge or would an ebay special work?

If you can answer those i'd really appreciate it. I've been working ont his car for about a year or so and have been collecting parts for it for almost 2 years now, and i really wanna have some fun with it this summer.

[WDRacing]

so wd i got a few questions that i hope you'd be willing to answer then...what should i set my fuel pressure at?On my wastegate which vacuum nipple should i use the one on the back or the one on the top or both?And on my bov which should i use there are 2.Is it ok to have my wastegate, fpr, boost gauge, and bov all going to the same vacuum source? I read that the wastegate is better to get vacuum from the turbo itself? IS that true?What plugs do you recommend and what should i gap them at?Any specific fuel pressure gauge or would an ebay special work?

If you can answer those i'd really appreciate it. I've been working ont his car for about a year or so and have been collecting parts for it for almost 2 years now, and i really wanna have some fun with it this summer.

Never buy EBay special parts when it comes to fuel or spark control. You can get a decent affordable gauge from Summit Racing.

I use all kinds of plugs, Autolite, NGK's, Denso's...just get one heat range colder then stock and gap them to .038

I never use the turbo for ANY vacuum or boost reference. I have everything come from the manifold, in fact I had mine setup exactly like yours is.

The correct wastegate nipple is the one on the side.

Also, beg barrow or steal a wideband O2 meter. You really need to see what your AFR's are. If they are a tad rich you can reduce the fuel pressure a little until they are perfect. I personally always start off with 40psi of fuel.

WD

[zerepdivad]

Never buy EBay special parts when it comes to fuel or spark control. You can get a decent affordable gauge from Summit Racing.

I use all kinds of plugs, Autolite, NGK's, Denso's...just get one heat range colder then stock and gap them to .038

I never use the turbo for ANY vacuum or boost reference. I have everything come from the manifold, in fact I had mine setup exactly like yours is.

The correct wastegate nipple is the one on the side.

Also, beg barrow or steal a wideband O2 meter. You really need to see what your AFR's are. If they are a tad rich you can reduce the fuel pressure a little until they are perfect. I personally always start off with 40psi of fuel.

WD

Yeah i got my fuel pressure gauge on order now! And i'm going to initially borrow my friends wideband and see where everythings at and then i'm going to buy my own. I've already got an safc i just haven't hooked it up just yet. I'm going to flush my oil as well and not drive it again until i get it back from exhaust and have the wideband, safc,o2, fuel pressure gauge etc hooked up.

Another question is on the wideband what's an ideal ratio for a set up like mine?

Also right now i'm running the autolite 3924's in there. What would one heat range colder be? Or can you dirct me in the direction of a diagram for how to tell? I never understood the whole heat range thing with plugs too well...

thanks

[DevilMB3017]

Sorry to threadjack for a sec, but WD, is the 40psi fuel pressure running or not? Thanks.

[WDRacing]

Yup...runinininin

[Florida240sx]

Get ngk bkre6 should be 2.25 each depending on the place. gap to .036 -038

[zerepdivad]

Get ngk bkre6 should be 2.25 each depending on the place. gap to .036 -038

ok cool i'll pick some of those up tomorrow hopefully autozones got em. Now i'm pretty much just waiting for my fuel pressure gauge and exhaust and all the other little things.thanks a lot to those who have replied. i appreciate it.

[DevilMB3017]

If autozone doesn't have the spark plugs in stock they're probably wrong and can't search by that number.

Ask for plugs for a 2002-04 Jeep Grand Cherokee Overland 4.7L V8. Those are BKR7Es and what I currently run personally.

[zerepdivad]

What is your boost gauge reading for vac and boost? It should have readings of 18-20 for vac while idle, if not then you have a vac leak.

i somehow missed this.... yeah i've got about 19 on vacuum so i don't have any vacuum leaks at least.... got my fuel pressure gauge from summit on the way and i've got to wait til sometime at the end of this week to get my exhaust done and get o2 installed. I just wired up my safc does anyone have any idea what i should have my settings at for a setup like this once i get everything done?