Fresh SR20DET Swap, Tech questions

[Stu240]

Ok,

So i just completed my first SR swap into my 95 zenki.

It is a '98 Kouki blacktop with vct and 5 speed trans.

I have a couple small things, and maybe I am being a little to picky but this car has to last me a couple years and be fairly reliable.

A little about the extras i did over stock,

Megan Exhaust Header
Megan Turbo Outlet
Megan Mid pipe to factory cat
3" from cat back
Braided Coolant Lines to turbo
Isis Radiator
Isis Dual electric fans with shroud
Small FMIC

Other than those items everything else is stock, no boost controller, no BOV.

I used a new harness, main and lower from wiring specialties.

Issues I have questions about,

Fast idle;
seems to be leaking small amount of coolant, not from lines but from the unit itself. Has any else ever encountered this? If so is there an easy fix? I get about a silver dollar size wet spot overnight from where it is dripping on alternator and then to the floor.

Slight Backfire;

Ok this one is weird to me, if I am at lower rpms, less than 2500 and shift, i get a small backfire when i touch the accelerator again after letting off. If i am above those RPMs then I have no issues.

Those are really about it, no other check engine lights, codes, vac leaks or anything like that.

Any ideas or help would be greatly appreciated.

I have to drive the car 1500 miles cross country in about 2 weeks to get to school.

Thanks
:2f2f:

[jr_ss]

There really aren't any serviceable parts on the fast idle. Buy a new or used throttle body, that's your best bet.

A tune would fix your backfire, SR's run slightly rich from the factory as do all cars.

Word of advice, sell the Megan exhaust manifold and buy a Tomei unit if you want a problem free part. Otherwise, put your factory manifold back in, they are good to mid 300hp levels anyway. Megan racing makes shit parts. Your exhaust manifold will crack, and you'll be up shits creek without a paddle at school.

[Stu240]

hmmmm,

OK,so I guess I will have to go the new throttle body route to fix the fast idle leak issue. That's simple enough.

As for the backfire issue, it is not that I hate it, its just that well its annoying.

I am going to be in the Charlotte NC area for school after May 16th, any one know of any places that do tuning? Would like to find somewere there that could take a look at it.

As for the megan header, I have used megan parts in the past and never had an issue with them, I had a header on my Sentra Spec V, and few other parts. I know they are not top of the line parts under any ones opinion but it will work for the time being.

This car will cont. to go through a lot of changes over the next few years including upgrading parts once the funds are available. Hell i would love a tomie short block, header, dif, you name it I want.

But such as they say you can wish in one hand and S**t in the other and see which one fills up first.

Thanks for the advise, and keep it coming.

[LayNLow]

If you are that dead set on Megan manifolds, I would take a stock manifold with you at least. They are bad about cracking, so bad they can drop the turbo. This has happened to two friends of mine.
So are you going to UTI?

[Stu240]

Wouldn't say I am dead set on using Megan headers, the price was right for the sentra, and this time around it was all I had as it came new with the motor.

Guy i bought the motor from decided to go with a small block 350 instead and this header already, and had trashed the factory one.

Anyway I will keep a close eye on the header at first sign of fault I will replace it. I never realized so many people have had this happen to them.

And to answer the other questions yes, I will be at NTI in moorseville. Taking the nissan specific courses as well.

[ultimateirving]

Also there are coolant lines that run under the intake manifold, these are notorious for leaking. replace accordingly

[Stu240]

I have check those lines and the leak is not coming from the lines.

Attached is a picture of the source of the leak.

I believe jr_ss is correct in the need to replace the throttle body to fix, as I don't see a way to service or repair this part. :confused:

[zombiewolf513]

I am going to be in the Charlotte NC area for school after May 16th, any one know of any places that do tuning? Would like to find somewere there that could take a look at it. .

If you were really serious, you could drive to wilmington and see the guys at national speed.

[Stu240]

National Speed you say?

I will have to look into that.

[funktown240]

No engine related suggestions but my advice to you would be to reconsider your technical school choice. I fortunatly tested for a license (Airframe and Powerplant) in aviation but these schools promise more than they can deliver. I overpaid for my school (30k) and pay $400 a month in student loans, dont even know how long till its paid off. I have been fairly sucessful but no credit can come the school itself, had to market myself to employers. Most of these tech schools are not state accredited and classes or hours cannot transfer. I knew a guy that went to Diesel school and ended up changing oil.

[Stu240]

I appreciate the advise.

I am fully aware of how these schools work. My wife used to be a recruiter for ITT.

I also know that these school are only as good as what you put into them. I have goals and a plan, and the school is simply a means to an end to gain the knowledge i want. You could say I am using them just as they are using me.

Thanks for looking out though.

[jr_ss]

Megan headers on the SR tend to fail quite often. Heat kills them and well, lets be honest your SER didn't really see the EGT's these motors do, especially on a stock turbo pushed to it's limits. Find a stock manifold, you're better off with it anyway. Faster spool, zero issues with cracking and as stated, flow well enough for your goals for the time being.

[funktown240]

I appreciate the advise.

I am fully aware of how these schools work. My wife used to be a recruiter for ITT.

I also know that these school are only as good as what you put into them. I have goals and a plan, and the school is simply a means to an end to gain the knowledge i want. You could say I am using them just as they are using me.

Thanks for looking out though.

Good luck to you sir!

[zombiewolf513]

Find a stock manifold, you're better off with it anyway. Faster spool, zero issues with cracking and as stated, flow well enough for your goals for the time being.

I've got one for sale. Great shape, typical rust and broken heat shield bolts. $40+shipping and I'll even include a fresh set of Nissan OEM Locking Tabs. OR, you can send me the money, contact CodyAce and tell him you want a manifold extrude honed, and I'll send it straight to him for you. One could argue that an extrude honed manifold is far superior to a Megan. Won't crack, extremely good flow, fast spool, no fitment issues.


Google search "national speed facebook" and look at the work they do. ...Now. ...Go!

[Stu240]

I checked out their website. They look pretty legit.

As for the header, I will keep it in mind. May take me a little while to come up with the extra funds. that cross country trip is going to eat a lot of my current funds. Moving is never fun and always more costly than planned.