donkey punch turbo kit....

[grandamngt03]

if i was to buy the level 3 kit, (10psi set up) would i need any other upgrades outside of the kit i would need to keep my engine life near normal, ?cam?, heads?, etc.....? any help is good thanks

[firefightincwbo]

well if u read the produat description it says u should run different heads and head gaskets to be safe

[grandamngt03]

thanks for the help, i think i can read, i was asking if it is necessary to have them for my engine not to blow up...if anybody can actually help me out who knows a little more it would be nice

[Bjornboy81]

Originally posted by grandamngt03
thanks for the help, i think i can read, i was asking if it is necessary to have them for my engine not to blow up...if anybody can actually help me out who knows a little more it would be nice Take it easy man...he was trying to help.

I'm not sure if it's totally nessasary, but if I were you I'd get in contact with tejohnson (I think that's what his screen name is)...he worked with DPP in developing this kit. Also email the guys at DPP. I've delt with Jeremy (Germ) and he's a good guy who will be more than willing to help out :)

[grandamngt03]

thanx...i just dont like when ppl try to make u look like an ass for askin a question, ill try the email

[96GreenGaGT]

i think the stock block can handle up to a maximun of 8psi. i believe somebody said something about it on here or at gagt... i don't remember. but if you were to run 10+psi it would be a good idea to have new heads and gaskets and the cam. better safe then sorry.. and the gain you get from it would be worth it.

[Bjornboy81]

Originally posted by 96GreenGaGT
i think the stock block can handle up to a maximun of 8psi. i believe somebody said something about it on here or at gagt... i don't remember. but if you were to run 10+psi it would be a good idea to have new heads and gaskets and the cam. better safe then sorry.. and the gain you get from it would be worth it.
Question: What do you consider "New Heads"? If you buy the heads that DPP or Milzy MS offers, all they are, are stock heads that are ported and polished...how does that help the engine "handle" more boost? I can see you outflowing them, but it's not making anything stronger.

I'm not trying to be an ass here, please don't take it that way, I'm seriously wondering about this :)

[96GreenGaGT]

well i think it does have something to do with the flow. the ported and polished heads that mms offers at stage one produces like an extra 30hp..while stage 2 produces like 80hp. it's not just the port and polish though they upgrade the rocekrs and lifters too i think. but if you really wanted to you could just have your stock heads bored .030 over. and that'll probably give you more hp from that alone. then port and polish it and upgrade the rockers, lifters, etc. do that before you turbo it.

[Azrael]

New heads aren't needed but having the heads resurfaced to be perfectly flat would be a must. Some mechanics scrape/grind/sand the old gasket material off of heads during repairs which can cause slight pits where the head isn't pressing the gasket tightly to the block. Or sometimes heads can warp ever so slightly over time causing the same problem. These weakpoints can lead to premature gasket failure under conditions with higher compression going on.

[96GreenGaGT]

i'm having my heads milled to .030 over stock. maybe more depending on what the depth of the blcok is from the side of the piston to the outside edge. don't want to go to far or the block will eventually crack under high heat and pressure because of it being too thin. that and a new cam and higher flowing fuel rails. you need to upgrade your fuel rails if you go over 8psi. because you will burn more fuel so your pmg will go down slightly i think.

[slowbird]

A Stock 3400 can handle 10PSI of boost without issue, as long as the tuning is right.

Originally posted by 96GreenGaGT
i'm having my heads milled to .030 over stock.

Are you milling the Head .030 or are you Boring the block .030?

I wouldn't mill the head that much if you are going to apply boost. That will increase your CR too much...you may even have issue with Piston/head clearance. Also...increasing the displacment on the 3400 isn't neccesary and not needed.

Originally posted by 96GreenGaGT you need to upgrade your fuel rails if you go over 8psi. because you will burn more fuel so your pmg will go down slightly i think. [/B]

Stock Fuel rail is fine...the injectors will need to be changed.

[xxbackhillxx]

Originally posted by slowbird
A Stock 3400 can handle 10PSI of boost without issue, as long as the tuning is right.
I wouldn't say without issue. Even with tuning.

Originally posted by 96GreenGaGT
[B]well i think it does have something to do with the flow. the ported and polished heads that mms offers at stage one produces like an extra 30hp..while stage 2 produces like 80hp. it's not just the port and polish though they upgrade the rocekrs and lifters too i think. but if you really wanted to you could just have your stock heads bored .030 over. and that'll probably give you more hp from that alone. then port and polish it and upgrade the rockers, lifters, etc. do that before you turbo it.

Rockers aren't even on heads. Where are you getting that from? Milzy doesn't offer aftermarket rockers or lifters. What is offered with his heads are new valves, swirl polish, upgraded springs, keepers and retainers, milled to .020, and cleared for the lifts of the stage 2 cam.


Where does it say stage 2 heads produce 80hp? With supporting mods it's even a maybe.



As for the question at hand. Upgrade as many things as you can to get the most out of your turbo kit. A turbo kit on a stock grand am will yeild nearly nothing since everything is stock. I wouldn't bet on anything quicker than 14.7.

Yes it should run pending the tuning, but it wouldn't be exactly the most efficient car. As slowbird said, injectors would be a must. I'm outflowing mine currently and my setup is completely NA.

[slowbird]

Originally posted by xxbackhillxx
I wouldn't say without issue. Even with tuning.


With the proper tuning a 3400 in good shape will have no problems handling 10PSI.

Many guys with 2nd Gen Cavaliers/Sunbirds have swapped stock 3400 motors from Junkyards, and thrown on a charger or Turbo. Only 1 guy has blown his engine and it was the guy I mentioned in my 3400 Destruction thread.

He was running 12's on a stock motor with alky injection.

The LA1 can handle 10PSI.

[TurboGAT]

there is a guy on 60degreeV6.com that was running 12psi on a stock 3400 without doin anything....im running 10psi with a huge turbo and my motor is running pefectly fine....i did have custom computers made up and i have an excellent tuner but everything is fine and you should be good just like slowbird is sayin

-Brian

[Bjornboy81]

Why are you running a "huge turbo" on only 10 psi? why not have a small turbo and eliminate lag?

[TurboGAT]

there is barely any lag...a kid that has the donkeypunch turbo kit by me on his GA has more lag than i do...i cant push anymore psi than that because i have no other motor work done but i am planning on doin a forged bottom end and other thngs so i can run a lot more psi

-Brian

[Bjornboy81]

I'm suprised there's hardly any lag on a "big turbo"...what kind is it?

Where are you getting bottom end forged components from? :)

[TurboGAT]

its a garrett t-04 b90 turbo rated for 500hp....same guy that is doin my custom tranny is goin to do my motor...he builds custom motors and trannys and he is my uncles best friend so he is hookin me up really good...it will turn out to be a sponsorship most likely

-Brian