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I'm going turbo!!!!!

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dropped99gs

10+ Year Contributor
139
0
Mar 10, 2011
dallas, Texas
First off, thanks to all the members and wisemen on here for the years of posts and threads. I've done countless hours of reading and researching in regards to where to take my dsm. By that I mean to sell and get a gst or gsx, or keep the 420a and do a complete conversion. I purchased my car this past March for 1500.00$. It had sat for a few years and needed an overhaul but only had 94,000 miles. Since then I've done everything to ensure I have a reliable DD. The worst thing yet was having the idler and tension pulleys give out going down the interstate. Thank the big man upstairs my engine survived. Had a compression test done and everything came back normal. Had a gates tbelt kit, new tensioner, seals, etc... all done at this time. As well as doing a complete overhaul. http://www.dsmtuners.com/forums/420...belt-went-out-what-shop-charging-me-fair.html That being said I have decided I will be okay to boost then build my engine later.
The reason for this thread is so I can post updates of my parts list as I'm going to piece together my own kit. I have the end all list saved to my phone and have already been locating the components.

I will have 1400.00$ Max that I'm allotting for this. These funds will be available for me in november's first week. (Difference check from school)

As you can see I live in TX. We had over 40 consecutive days of 100 + degree weather this year so I want to keep my AC. I have a shop with welders and air tools here at:hellyeah: the family farm so I will be doing the install with family and friends.

For a Turbo I'm thinking hx35 holset. Looking for a used one to rebuild. Where I'm at they are a dime a dozen and from my research will be perfect for later on when I can build internally to up the boost. Fyi - I have more money coming in Feb and again in may. Feb will be enough to buy internalls and in May have installed. I will be ordering MS as well with the internals.

The next big thing besides Turbo is deciding on exhuast manifold. I've looked and looked, and Ive decided initially a cast manifold will be acceptable to start with. Ideally I would like to find someone upgrading and trying to sell their log/cast manifold.

I've read about all the electronic essentials to ensure I don't go lean and ensure proper function. Again I will be looking for what I can find used, such as Turbo timer and boost controller.

As for intercooler I want fmic. Prefer new on this, or very slightly used. Probably the one thing I have not done much research into. Mainly because I can get new or used on. Craigslist for a good price. I've read the install on a fmic and will just order or find a local shop with a universal or possibly specific piping kit.

Like I said, I will be purchasing the parts in november hopefully have everything in by Dec. Then over Christmas break do the conversion.

The only thing I will need fabricated will be the down pipe and I know a few shops who do honest work for a good price. Just hope with what I get my AC can stay.
The first items on my list will be Turbo, manifold, intercooler and piping. Those are the biggest dents in my budget. Aside from boost controller and a Turbo timer everything else will be ordered new online. I.e. oil lines, fuel management, fuel cut defender, missing link, fuel pump.

One thing I have not covered what I'm doing yet is bov. I think I can find a good used one locally.

I have the funds to go new, but whatever I save goes toward the internals later or better name brands during conversion. Not trying to go as cheap as possible, you get what you pay for.

So, what does everyone think?

Again, this isn't just a wishing well thread like I've encountered in my searches. This is happening in the next few months, 100%.
 
I dont see anywhere that your building the engine, so that means youll be limited to around 8psi.. with that .. " For a Turbo I'm thinking hx35 holset" is a pretty big turbo for a non built engine.. Imo it will be laggy and not very fun til upper rpms.. it may frustrate you b/c it wont deliver power when you want it. IMO, get boosted first, turbos can always be upgraded later once you know what your doing and what you want.

"The next big thing besides Turbo is deciding on exhuast manifold. I've looked and looked, and Ive decided initially a cast manifold will be acceptable to start with. Ideally I would like to find someone upgrading and trying to sell their log/cast manifold. "
Perfect, a log mani works perfect for you.

down pipe. To get it to work with AC, you can get a hahn down pipe, or custom make your own, but, for the time it takes to actually build one to accommodate the tight space, you can buy a used hahn eliminator DP . depending on the shop, it will probably save you time, and get a better product (its ss).

"I've read about all the electronic essentials to ensure I don't go lean and ensure proper function. Again I will be looking for what I can find used, such as Turbo timer and boost controller. " None of these control fuel.. make sure you understand what your doing first.. You want a SFMU or FMU. Or portfueler.

"As for intercooler I want fmic. Prefer new on this, or very slightly used. Probably the one thing I have not done much research into. Mainly because I can get new or used on. Craigslist for a good price. I've read the install on a fmic and will just order or find a local shop with a universal or possibly specific piping kit. " this will work, IMO go to ebay, godspeed has good cheap stuff.

"Aside from boost controller and a Turbo timer everything else will be ordered new online" This isnt a "Necessity.. id drop these.. and ad them later.. its 300-400 bux you could be spending doing this right.. I dont see anywhere about a wide band? forget the boost controller and TT, get a wideband.

Remember these things:
You get what you pay for
You gotta PAY to Play
Cheap, Fast, Reliable.. You can only have 2

You have a PM.

shameless plug for my turbo kit ; )
http://www.dsmtuners.com/classified...2/hahn-turbo-kit-s20g-3dp-log-manifold-32103/

you wont need to upgrade with this turbo, as its good to ~400 hp. ; )
 
The first items on my list will be Turbo, manifold, intercooler and piping. Those are the biggest dents in my budget. Aside from boost controller and a Turbo timer everything else will be ordered new online. I.e. oil lines, fuel management, fuel cut defender, missing link, fuel pump.

You may already know this but you will need a 12:1 fmu or sfmu for your "engine management." If you do plan on going to MS then I would suggest the vortech FMU because you are going to replace it with MS.
 
You do not want an hx35 or anything close to that big without forged internals. Even if you run it at 8 psi, it will still make more than enough power to destroy the engine. I'd look for a 13g, 14g, or a t25.
 
Or a 16G or 20g.. I think 13/14g is to small. 16/20Gs have had great success for our platform on a street level.
 
I think a 20g might be a little much. 16g is probably the best for power but will push your engine. Trust me been there done that blew it up. If I were to ever boost another 420a I would go with a t25. A little less air but quick spool time.
 
Once he builds the engine, the 20G will sit him pretty.. IE giving him some head room, while also giving him plenty of usable power band while not built. IMO the 16g and 20g are really solid proven turbos for quick spool and great power output for street use.
 
Once he builds I would agree on a 20g but for him a 16g will do well at stock levels and leave some room for him to grow with if he decides to build it. From my understanding a 16g will support 380 hp with all supporting mods of course.anything over that in a fwd and you will be eating tires.
 
Once he builds the engine, the 20G will sit him pretty.. IE giving him some head room, while also giving him plenty of usable power band while not built. IMO the 16g and 20g are really solid proven turbos for quick spool and great power output for street use.


Once he builds I would agree on a 20g but for him a 16g will do well at stock levels and leave some room for him to grow with if he decides to build it. From my understanding a 16g will support 380 hp with all supporting mods of course.anything over that in a fwd and you will be eating tires.

I have to side with glows on this one. Hes talking about forging as early as Feb so I wouldn't waste money on a 16g.
 
HX35 doesnt really come alive until 25+ lbs. of boost. Your better off picking another turbo.
 
OP.. since I have not been involved in a 420A turbo build before, I hope you post a build log of your progress.
With lots of pics and heavy on details, with notes on costs, what issues you had to overcome and how you did that.
 
^ I think there's plenty of that already if you poke around.. ; )
With Kits available, theres really not to much guess work in these any more..
 
^ If i were you i would pick up a book and learn to read before i posted things that had been said 2 or 3x already.. Hes running low boost levels for a short time. Makes no sense to run a small turbo, when he would end up hunting for a larger one in a few months.. The ones suggested have been proven on both a low boost and a moderate boost "12-20" psi level.
 
I had a 16g equivalent turbo on my stock 420a and traction through first and second was a issue. I drive different than others. A 20g would be a straightaway champ. My style is more mountain roads where low lag would be best. For my style a 16g is perfect.
 
Actually he can pick up a 14g from Starquest club, and they are far from to small they spool wicked quick, and also flow way better than a 14b almost flow as good as a s16g. I had a friend with an FP 14g and he was running it at 26psi at the track with no problem (key point is FP not MHI) and i have seen MHI go up to 20psi with no problems. So for a turbo 420a back when i was going to build on then sold it and got back into 4g63 i was going to run a FP 14g on mine at 8psi (which is what the wastegate is set at stock). But just remember once you go boost you dont go back!!
 
So I've decided to go with gloryder's Hahn kit. The only things I will need aside from that will be fuel management. Also after I get the internal work done I really wont need to do much it crank up the boost after the break in.

I will be making detailed videos, pics and a write up of what I encounter. Basically I will just be following and learning from what others have done.

I still have just over a month till I get my check, so I will have plenty more time to read and learn. Best part is I only have class 3 days a week. So I can have 4 days available to install everything and ensure it runs proper before I have to have it.

I'm also debating on upgrading the injectors as well with this first go around. I want boost now, nut I don't want to destroy my engine before I build it. So 8 psi max is all I will be running.
:thumbs: thanks everyone.
 
Well I was never able to get the kit LOL. Had some tickets and other things to handle. We all know how it goes right??? Well after all this time I've decided to just get some bread together for either a 2g gsx or 93-94 3gt vr4. I've been watching the market and have seen a few come up and I know I can get the bread together soon enough. Then recoup on my current car and invest toward w/e I get. My main concern with my next vehicle is going to be the condition of the body and interior. Mechanical stuff I can sort out and still have a daily. Another thing that has always held me back, not having a daily and while I need to have my car down for a few days. So, finally having that ability and able to rent a garage from my complex I feel that would be the best route to go. With what it would take to make my car perfect and something I would want for a few years it would take about $4,000. I feel to the right buyer and if I include the stereo I could get $4000 for my 99 gs with 117,xxx miles. I'm looking to set a cap of $6000 for a vr4 or 25-3000 for a gsx that needs mechanical work. I can always get a new engine and trans so long as the body and interior is good and still come out with what the vr4 would be... BUT I like the classiness of the vr4 and the most I plan to do appearance wise would be 98 face lift, wheels and tein coilover setup, basic bolt ons, and call it a wrap. I'm looking for something I can have for the next 4 or 5 years and still turn heads in a good way.
 
go for the small 16g until you build your motor... it spools so quick.

As far as fuel management go for megasquirt standalone... I love mine! The autotune feature is where its at. Make sure to get a wideband to go with it.
 
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