Hey guys.. I'm going to be building a new engine over the winter for my car (yes the current engine is healthy, just aquired a core for the buildup)

Was looking for a few opinions..

Do I stick with a stock displacement and completely beef up and blueprint the engine

Or do I go with a 2.3 stroker kit and Also obviously beef up everything.

I am not looking to run a much higher redline, but I do want the engine to be able to handle anything I decide to throw at it in the future.

 

hey malibujack,

i'd go for stroking the motor to 2.3l... which stroker kit? why?.... always interested in your point of view and reasoning...

one of the reasons i keep coming back to site.

and if you do a stroker kit, won't the engine be blueprinted simultaneously?

cheers

... oh yeah, which cams are you tthinking about?

 

Stroke it baby....stroke it like you love it

in all seriousness though...if you can afford it and if you have the proper mods to support it...i would try the stroker. I am sure everyone on this bored has some kind of curiousity toward the whole idea of it... and who better to show everyone how it's done rather then someone who everybody knows (on this board anyway).

Cheers to stroking it

 

Yep, the engine with a stroker would basically also be blueprinted..

I'm inclined to do the stroker, and I think AMS is offering a nice and affordable kit, their using components that I've used in the past and am comfortable with the reliability of the manufacturer.

the 2.3l offers something that you just can't get with any turbo upgrade, and thats more torque (Before turbo spool), plus since it displaces more air volume, its exhaust volume and velocity will improve the performance of any turbo.

the 2.0l blueprinted means I could potentially rev the engine well over 8000rpm, with a big turbo it could easily support large amounts of horsepower.

the 2.3l also can support larger turbos, and reduce the spool on most turbos.

The big factor for me is cost, I'm not a sponsored tuner, nor do I have access to the resources and machine tools to do everything myself. Ultimately either way I go will cost around the same.

However, when this shortblock is done, I'll actually have a complete engine/turbo combo to literally swap into my car.

This is what I have (or am working on, but have all the parts):

Evo Head, Fully ported, oversized valves, blended and polished
- 1mm oversized Valves
- HKS 272 Cams
- Findenza Cam Gears (Spelled wrong I think)
- oilers and misc head parts (Missing at the moment)

Stock Intake Manifold, Blended, polished and port-matched
Stock Throttlebody, Also blended, polished and matched to the intake

JIC Stainless TwinScroll Exhaust header (Ceramic Coated)
DNP O2 housing (Ceramic Coated)
TD05HRA-16G6-9.8t Turbo (titanium turbo)
10.5t Hot side housing (Ceramic coated) to replace the 9.8t housing on the turbo

Evo Engine block (What should I do?)
2.3L Stroker kit
Balance Shaft Eliminator
CRYOFreeze seasoning of the block and reciprocating assembly (Stress relieves the metal)
chamfer sharp edges (reduce propensity of cracking under severe stress)
I'll probably have the crank treated to the works, knife edged etc (reduces rotational mass, but also reduces the frontal area of the moving parts therefore air and oil won't act against it as severely)
All ARP Hardware

Blueprinting is more than just replacing the crank, overboring and clearancing the block, its paying attention to details that can cause catastrophic engine failures, so stress relieving components, deburring and smoothing sharp edges, etc..

I think thats it..

 

Whats better is the original engine, turbo, intake manifold, etc.. will be removed from the car in one piece and set aside.. This way I can always restore it to stock, or have a backup.

 

Jack, I hate to sound like an old fart, but why are you asking questions that you've already answered for yourself? You know your building a street car, and you have already said you are not looking for much more rpm headroom... It doesn't seem like there is much to mill over... esp if you look into kits that will keep the piston speeds somewhat reasonable if, and when you do "wind it up". Math is not my strong suit, how fast are the pistons traveling with the AMS kit?

 

Pretty damn fast.. I think the reasonable expectation for the stroker's max RPM is just under 8000rpm, the details are what make for longevity in high stress environments but its really the stresses and the steeper angles due to the stroke that can do damage, moreso than the velocity (though increasing stroke does increase the velocity of the pistons) It also changes the nature of how you handle timing and AFR's also the more rapid piston velocity will rapidly generate heat from compression, increasing the possibility of detonation

I know the advantages of both, and disadvantages.. What I'd like to see is the reasoning that everyone is using to assist me in my ultimate decision (I could still change my mind if there's a compelling argument for any particular direction)

I think there's another thread that calculated the linear velocity of the pistons with the increased stroke.. obviously its somewhere around 20% faster..

 

mr malibu i have a stroker from magnus motor sports.fully built (pauter rods ross pistons)the only thing is i dont have a turbo big enough.any questions you can call me at (985)886-3277

 

sorry the turbo is a greddy t67 25g

 

Even a stock turbo is good for major gains with a stroker kit and optimized intake/exhaust flow (head, cams, intercooler, etc..)

Higher RPM is where you will find the "restrictions" in the turbo.. What you gain in lower RPM power and torque, and improved drivability are the major advantages to the stroker.

 

the head is ported polish hks272 magnus intake manifold.70mm throtel body buschur int cooler and upper int cooler pipeing.oh one more thing they like fuel

 

Yes, strokers are thirsty engines..

One interesting thing about the stroker is the increased piston velocity means it will want to draw more air into the cylinder, along with the turbo forcing more air in.. It has the net effect of making the turbo's job alot easier.

 

you know what is really cool?crusing in 5th at 2000rpms

 

I'm curious to know if anyone has actually done a stroker engine with a stock(ish) turbo.. it would be interesting to compare the curves with little or no other changes.

 

See, you see it from my point of view.. Its more about drivability than ultimate performance.. On the streets this type of thing makes for a more well rounded and enjoyable car.