SBR 2.3 6 bolt stroker kit questions

[92_talonTSI]

Well as stated I like to ask alot of questions. Im going to be building a 6 bolt motor.For my 2g awd. Well the motor is perfectly running but I want a little more kick plus I want more boost and good parts.I was going to just buy some good rods and pistons along with all new bearings and polishing the crank. I was on slowboys site and notice there stage 3 stroker kit saying it would be a 2.3 stroker. Anyone Running this? Ill be letting someone else do the maching to the block my garge and wallet will never be enough to own those tools. But everything else im going to be doing.Is there kit a good kit? It will be matched up with a big 16g or 20g until next tax time when im looking at a gt35r. along with ported head and hks 272s will this combo be nice?Im mainly going track and show i understand tuning is a big thing and dsm link will be involed.Tuning is hard and takes alot of reading but Im pretty good with it Since ive been tuning on my camaro.Well everyone im sorry for the long post. Hope to see some good replys

 

[exiletalon]

STAY AWAY FROM STROKER MOTORS, of course this is my opinion, I had a 2.3L sstroker motor, several of my friends have had various stroker motors built to drive FAST!!!
ALL of mine and my friends stroker motors have blown!!!!
For the price, just get a good condition 6 BOLT, rebuilt it with forged internals, mock it up, It will be teh same price or cheaper than a stroker motor, and I wish I would have done it.
It will be much stronger and much more reliable. And it will take more abuse for longer.

Obviously this my opinion and from my personal experiance!

 

[Scott_S]

I hear good things about the stroker. They allow you to spool bigger turbos with less effort and make some pretty good torque numbers. Why dont you look into the sbr 2.1 destroker kit also.

 

[sbcxtreme]

exiletalon, what caused all of the strokers to blow? im looking at doing the stage 1 to my 7bolt and cant find too many opinions on this. How much machining of the block is required for the crank? I am having a shop do it, but im just curious. thanks

 

[project_tsi]

There are 2 factors that are not too good on the 2.3L.

First, lets get straight how it works. A stroker works by taking a longer stroke crank, utilizing the stock length rods, and adding shorter length pistons to make it all fit and work properly.

This in turns adds (1) a not so great piston/rod angle ratio inside the cylinder walls. This in time COULD wear out the cylinder walls to an "egg" shape. I myself am not concerned about this as it will take a very long time to occur. And (2) it adds a greater load on the main bearings. Revving a 2.3L at 7500R's is comparable to revving a 2.0L at 8500R's. However if you bring a 2.3L to 8500R's it will most likely rip apart the mains as the rotating stress is too great. Generally 2.3L guys run about 7400R's for a max redline, but usually not going over 7200R's. For me, this is fine. I am kind of old school. I would rather make power down low and in the mid RPM range rather than at 7KR's+. I love the concept of making the same power at a lower RPM and at less boost and in the same time spooling up 2-500RPM faster.

Strokers are a great engine to build as long as you treat them right. Don't rev past 7500R's even if you want too. Doing so will yeild early engine failure. I think this is a common misconception with people and stroker motors and as a result of revving too high, they have engine failure.

Hope this helps.

 

[ericbev]

ALL of mine and my friends stroker motors have blown!!!!

Obviously there was something done incorrectly here. Blown? Melted pistons? Snapped Rods? Broken cranks? Spun bearings? Lets try to not be soo vague.

Many people have and will continue to run strokers successfully in their high HP applications without a hitch.

 

[sbcxtreme]

i thought that the wiseco 'stroker' pistons were the fix for the rod/piston angle.

 

[exiletalon]

I am sorry, I am not talking about the kit, I am talking about purchasing a completely new "stroker motor" from SBR, These were used to drag on, But I found them not to be as reliable, I am just running a built 6-bolt in my dragracer - 95 GSX. But This is in the Rocky mountains- "MILE HIGH" so maybe that played an effect.

 

[andymoraitis]

There are 2 factors that are not too good on the 2.3L.

First, lets get straight how it works. A stroker works by taking a longer stroke crank, utilizing the stock length rods, and adding shorter length pistons to make it all fit and work properly.

This in turns adds (1) a not so great piston/rod angle ratio inside the cylinder walls. This in time COULD wear out the cylinder walls to an "egg" shape. I myself am not concerned about this as it will take a very long time to occur. And (2) it adds a greater load on the main bearings. Revving a 2.3L at 7500R's is comparable to revving a 2.0L at 8500R's. However if you bring a 2.3L to 8500R's it will most likely rip apart the mains as the rotating stress is too great. Generally 2.3L guys run about 7400R's for a max redline, but usually not going over 7200R's. For me, this is fine. I am kind of old school. I would rather make power down low and in the mid RPM range rather than at 7KR's+. I love the concept of making the same power at a lower RPM and at less boost and in the same time spooling up 2-500RPM faster.

Strokers are a great engine to build as long as you treat them right. Don't rev past 7500R's even if you want too. Doing so will yeild early engine failure. I think this is a common misconception with people and stroker motors and as a result of revving too high, they have engine failure.

Hope this helps.

Dan has some excellent points here and he's hit the nail on the head. We were talking about this last night and since Dan and I will have mirrored setups (I'll be running a smaller turbo on AWD while he'll be running a G50 on FWD) we agreed that high revs will kill a 2.3 eventually. While Dan plans to shift at no more than 7200, I don't plan on going above 6800 at the most. It's all in enjoying a broader and flatter torque curve as opposed to having to rev the crap out of the motor to get things moving. My setup should be back together and I'll be able to provide feedback within the next 7-10 days. I can't wait!

Cheers,

Andy

 

[steel_3d]

Exiletalon, you really should clarify how/why these motors you speak of have failed.

If you just say fack it, damn thing blowed up, 2.0 must be better, you haven't learned anything, you're just out a bunch of cash.

 

[92_talonTSI]

Thanks for all the replys and keep them coming im planning on getting the kit and putting it all together myself.I dont really plan on running it past the stock rev limiter.Keep the post coming thanks all

 

[MMM]

For drag, what do you all recommend? 2.3L and carefull rev it of course, or a 2.0 built with the same internals (eagle/weisco) and rev the piss out of it??

 

[steel_3d]

Either will work. 2.0 would be easier on trannies.