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Best Engine Internal Mod?

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maxperformance

15+ Year Contributor
206
0
Sep 16, 2003
Monmouth, New Jersey
What would benefit me the most out of getting internals for my 95 gst, would it be pistons, cams, cam gears? Anything but whats the best thing to put in our engines to make them stronger?Whats the number one best thing?
 
This is very hard to answer. just look at it this way its a balancing act you upgrade one thing you have to upgrade another to keep one strong part from putting unecessary stress on the weak part! while you have the engine open do it right. but if you have a stock car and what some quick bolt on power everyone will agree that exhaust is the first place to start when you get use to that power ,upgrade the turbo with supporting mods (injectors, fuel management, guages ,ect! there is no doubt about it , if you own a dsm the whole world is yours and believe that!:dsm:

internal - pistons and bearings!
http://www.kingbearings.com/index.html

http://www.stockcarracing.com/techarticles/1590/
 
rods would be the best internal mod provided its still a 7 bolt seen them kill a few motors.
 
cams.

your stock 7 bolt has gone 450whp. the rods are fine.
 
Wouldnt it be kinda pointless to upgrade one internal part. Thats alot of work just to dissasemble the engine. If you want to keep your 16g I would say keep your pistons, "big" 1g rods, metal head gasket, HK$ 264's and call it a motor. But thats just me...
 
you need to give more info on what power u want to put out, what turbo your going to run, what 1/4 mile times you want then we could give you a perfect answer.
 
Originally posted by 99gst_racer
No, he was right, 7-bolt........... If I was to do one internal mod, it would definately be HKS cams....... The block should be fine w/ a 16G.
itll take 450 hp but for how long. pesonally i would get rid of those rods before one of them decides its better off free outsid the block.
 
Originally posted by maxperformance
What would benefit me the most out of getting internals for my 95 gst, would it be pistons, cams, cam gears? Anything but whats the best thing to put in our engines to make them stronger?Whats the number one best thing?


I wasn't aware that cam gears were internal parts...

But to answer you question IMO, it would think valve train upgread for nice high revs.

But consider this, without thoughs high revs with only a 16g turbo if you are tunned correctly there is no reasion to upgread the connecting rods so this is why I say valvetrain..

Also keep in mind that you still wont make much power in thoughs high revs because of the stock cams..


So honustly I say just build your head.. new SS polished valves with a 5 angle job, new brass guides, HKS or equal springs, titanium retainers, mild port job and cams.

Do that and you should have plenty of power....untill the wee little 16g runs out of steam for your new safe 8,800rpm redline.. (could be pushed to around 9,000 if you built it good enough)

which would require alot more puff than a 16g would have to still pull hard in thoughs high RPMS.. also you would risk over spooling the wee 16g turbo causeing premature damage to it.

Soooo I guess my point here is you have to evaulate the effects of each part and what your goal is. Research research research and then make up YOUR mind as to what parts will help you get to YOUR goal the quickest.


(BTW cam gears are a waste of money if you get good cams like the HKS's)
 
Originally posted by My96AWD
itll take 450 hp but for how long. pesonally i would get rid of those rods before one of them decides its better off free outsid the block.

nimble ran 453whp out of his stock 7 bolt for ever and then some reliably. i dont understand everyones fixation with swapping to 6 bolts. 7 bolts are fine.

original poster: biggest benifit would be cams (only if you have a turbo to match). biggest strength would be rods.
 
Where was that posted? 7 bolt holding 453whp?


From all the information I've ever recieved It's always been strongly suggest not to go over 400whp with a stock 7 bolt motor.


It all depends on what your current mod list is. If you have a stock Turbo you'll blow it up with Cams. (my friend blew 3, 14B turbos in less then 1hr of use with each turbo) Everytime he spooled it it would wreck the turbo)

He was running HKS 272/272 and it's not like it's from poor tuning or over boosting either. (he gave up after the 3rd one and just bit the bullet and bought the 02 housing he was needing so that he could put on his 20G. He then went 11.2@122mph with his 1G AWD.


Anycase IMO best bang for the buck while your in there:
-Balance Shaft Removal
-ARP headstuds

If you have the money slap in some Rods. As those are the week points on the 7 bolt motor, and so that way when you are ready to step up to a bigger set up you'll be ready to go. The stock head is good to rev to 8500 daily. (been doing so for the past couple months with mine no problems)

But the issue with reving high is most smaller turbo's can't flow enough air to make it worth while to rev that high.
 
Originally posted by BrnOutKing
Where was that posted? 7 bolt holding 453whp?

From all the information I've ever recieved It's always been strongly suggest not to go over 400whp with a stock 7 bolt motor.

Anycase IMO best bang for the buck while your in there:
-Balance Shaft Removal
-ARP headstuds

If you have the money slap in some Rods. As those are the week points on the 7 bolt motor, and so that way when you are ready to step up to a bigger set up you'll be ready to go. The stock head is good to rev to 8500 daily. (been doing so for the past couple months with mine no problems)

But the issue with reving high is most smaller turbo's can't flow enough air to make it worth while to rev that high.


You are right. It is strongly suggested not to exceed 400HP on a stock 7-bolt, but it can be done and it has been done. But also keep in mind, he (maxperformance) has a 16g turbo, so he will more than likely be in the 300 - 350 HP range. As weak as the any of the block's internals may be, as long as his car is properly tuned, it should be very reliable. In his case, I feel rods would be a big waste of time and money. However, high reving could be an issue. IMO, you are very lucky your valves haven't floated and got smacked by your pistons yet. It is recommended not to rev the stock 7-bolt head past 7800 very often, esp. not daily. With a 16g turbo, the best supporting internal mod would be mods done in the head, like RipperXX said. And I would start with cams.
 
ARP head studs are probably the best mod you can do to strengthen an otherwise "stock motor". I would recomend these to anyone planning on running 20psi or more, or anyone removing their head for any reason. Especially on 2g's with torque-to-yield stock bolts.
 
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