building new motor looking for longterm

[ssmokeyy]

Will my wife's gsx motor is gone for sure now and were building it one last time and want to make sure we do every thing we can to save it. Goal 430 whp daily driver. Goal motor to last 100k miles. slowboyracing is building us a block done with Manley rods and pistons 8.5-1 and 20 over bore. mitsu oil pump gears front case with short shaft kit they use. Arp rod main and head bolts. mitsu mls head gasket. Turbo not set but looking like the pte scm3431re or there new one that's billet shaft and ball bearing 57mm trim. Now the head not sure what were going to do here or what all needs to be done. I have fp2 cams on the way with fp beehive spring kit but other than that im not sure if i should go 1mm valves or head porting or what to help out the head and if i port it how much and if i only have it ported a little is it still better than nothing? timing belt is going to be the hks belt so i don't have to worry about it breaking early. were going to have dsmlink on it and 1050cc injectors we have the walbro 255 hp pump all ready. On the way is the fp race exhaust manifold and the map o2 dump with waste gate by tial on the end. How big of a spring is needed to hold 24 psi with a turbo around the size of the scm3431re? What im asking is if i forgot something to let me know? The head will be 2g the block is 1g.

 

[just90gs]

Will my wife's gsx motor is gone for sure now and were building it one last time and want to make sure we do every thing we can to save it. Goal 430 whp daily driver. Goal motor to last 100k miles. slowboyracing is building us a block done with Manley rods and pistons 8.5-1 and 20 over bore. mitsu oil pump gears front case with short shaft kit they use. Arp rod main and head bolts. mitsu mls head gasket. Turbo not set but looking like the pte scm3431re or there new one that's billet shaft and ball bearing 57mm trim. Now the head not sure what were going to do here or what all needs to be done. I have fp2 cams on the way with fp beehive spring kit but other than that im not sure if i should go 1mm valves or head porting or what to help out the head and if i port it how much and if i only have it ported a little is it still better than nothing? timing belt is going to be the hks belt so i don't have to worry about it breaking early. were going to have dsmlink on it and 1050cc injectors we have the walbro 255 hp pump all ready. On the way is the fp race exhaust manifold and the map o2 dump with waste gate by tial on the end. How big of a spring is needed to hold 24 psi with a turbo around the size of the scm3431re? What im asking is if i forgot something to let me know? The head will be 2g the block is 1g.

Yes I would say it would be best for you get the the head work done. The head is where you the power and it will be much easyer to make big number's with that set up. with the head work.

 

[gixrman]

Your wasting your money if get tons of head work done. There are plenty of people and threads that prove HP can be made on a bone stock head. Unless your going all out which you said your not 430hp is not far off with proper tunning and component selection. Your not building a stroker, the stock 2g head flows great for a street setup. Port (gasket) match it, replace the guides if needed get a 3 angle valve job and be done with it.

 

[BogusSVO]

from the sound of it you have done your reaserch and have a soild build.

make sure you have the head bolt holes in the 2g head enlarged for the 1g studs, so you do not have an oil flow restriction in the head.

A decent gasket match of the intake/head/turbo header will improve the air flow greatly , and keep air reversions to a min.

The +1mm valves will help airflow also, as long as the valve seats are machined properly, and the valve train gemorty is maintained.

 

[ssmokeyy]

Thanks for every ones help again... Has any one ever ordered a head from dsm graveyard? I have been buying parts of him for a long time but just found out that he builds motors and stuff like that. Im looking at there stage 2 custom head for 2g's and I was wondering if i sent them the fp springs and retainers would the rest of the stage 2 head with say there stage one port work done be a good head to run? There stage one port work is them doing it for 2 hours, stage 2 4 hours , 3 6 hours i called and asked a couple days ago to see what the dif was... Im just not sure whos the best for heads right now and again i dont want any shop in my town doing any work on this car any more going throw 4 motors in 2 years i dont feel that any shop here understands this motor... Where is a good place to get good gaskets for the intake and exhuast? Thanks again for the help... By the way how does every one feel about pte turbos these days?