CJ Posted September 28, 2005 Share Posted September 28, 2005 I have read a bit about these but as my technical knowledge is still very limited, I was wondering if someone could answer a few questions? I see that the HKS version comes complete with a +8mm fully counter-balanced stroker crank, H-beam HKS rods with the new stroke length, and Upper nickel-plated forged 87.00mm pistons. So, that means you will still need to use your existing block and head? 1. Would you need to bore out the block for the new piston size or is 87.00mm standard size? 2. What else would need to be done to the block? 3. Would the head or head set need any changes? I am sure I have missed something out so if there is anything else please could you advise. OK, so now down to the nitty gritty. What is the advantage of running a stroker kit over a standard car (assuming one with a single turbo conversion). What differences in performance and torque (not exact figures just generalisation) would one see? I am sure there are others on the board who would be interested too and not as prospective customers but as information gatherers. therefore, any chance we could keep this as an information thread and not turn it into a product or trader bashing thread Thanks for reading Link to comment Share on other sites More sharing options...
Alex Posted September 28, 2005 Share Posted September 28, 2005 1. Bored and honed out to 87mm..pistons are 86mm stock. 2. Nothing really...but you might want to acid bath it whilst it's out to clean it up.... 3. Nope...but you will need new head studs....does the kit come with all the barings too? If not you'll want some of them. A 3.4L (3356cc I think) stroker gives you ~10% more CC over stock...so very basically you might see a 10% increase in power/torque and earlier spool giving a higher and earlier peak torque figure...stroker kits are all about adding torque...and torque adds driveability IMO. KenHenderson is the only one running an HKS 3.4 on a BBS...there are some in the UK, done by TDi, but I don't know if the owners are contactable....as they may have before and after dyno sheets. Link to comment Share on other sites More sharing options...
Guest Terry S Posted September 28, 2005 Share Posted September 28, 2005 just rev higher mate. Link to comment Share on other sites More sharing options...
CJ Posted September 28, 2005 Author Share Posted September 28, 2005 just rev higher mate. And thats it Terry? Seems a hell of a lot of money just to be able to rev higher What sort of higher are we talking? Link to comment Share on other sites More sharing options...
Alex Posted September 28, 2005 Share Posted September 28, 2005 Nah...fit a 5.5L Tundra V8 Now that's stroked! Link to comment Share on other sites More sharing options...
Alex Posted September 28, 2005 Share Posted September 28, 2005 Tel means leave stock alone and rev higher ie don't bother stroking it. Link to comment Share on other sites More sharing options...
Jake Posted September 28, 2005 Share Posted September 28, 2005 just rev higher mate.Not arguing with you but how does a longer stoke promote higher revving? I would have thought the opposite would be the case, based on what I recall from motorcycle engines. These stroker kits sound like expensive HP Link to comment Share on other sites More sharing options...
Guest Terry S Posted September 28, 2005 Share Posted September 28, 2005 Tel means leave stock alone and rev higher ie don't bother stroking it. Exactly. You will not be able to rev a stroker like you can/do a stoke displacement engine. Also, what happens if god forbid, you spin a bearing. If its bad the lot is just junk as HKS AFAIK dont sell cranks seperately. Link to comment Share on other sites More sharing options...
Jake Posted September 28, 2005 Share Posted September 28, 2005 Tel means leave stock alone and rev higher ie don't bother stroking it. Ah, Alex posted this while I was reading the thread. Seems I misunderstood Terry. Link to comment Share on other sites More sharing options...
Guest Terry S Posted September 28, 2005 Share Posted September 28, 2005 Ah, Alex posted this while I was reading the thread. Seems I misunderstood Terry. No worries mate. Link to comment Share on other sites More sharing options...
michael Posted September 28, 2005 Share Posted September 28, 2005 http://www.fordmuscle.com/archives/2003/09/stroker/index.shtml Link to comment Share on other sites More sharing options...
CJ Posted September 28, 2005 Author Share Posted September 28, 2005 Tel means leave stock alone and rev higher ie don't bother stroking it. Ah right. So would revving higher on stock give the same performance as fitting a 3.4l stroker kit? If that is the case, why would someone as knowledgeable as Ken Henderson buy one and not just rev higher? Link to comment Share on other sites More sharing options...
CJ Posted September 28, 2005 Author Share Posted September 28, 2005 Exactly. You will not be able to rev a stroker like you can/do a stoke displacement engine. Also, what happens if god forbid, you spin a bearing. If its bad the lot is just junk as HKS AFAIK dont sell cranks seperately. I think I am understanding this a little better now. So, a stroker kit would give you more grint lower down the rev range but would limit you at the top of the rev range. Is that right? Link to comment Share on other sites More sharing options...
Guest Terry S Posted September 28, 2005 Share Posted September 28, 2005 Ah right. So would revving higher on stock give the same performance as fitting a 3.4l stroker kit? If that is the case, why would someone as knowledgeable as Ken Henderson buy one and not just rev higher? Possibly because he loves to be different. Dont get me wrong, there are advantages. For a street car with BIG turbo/s it would be cool as you'd spool earlier, but the cost, and possible future costs/problems outweigh those advantages to my mind. Link to comment Share on other sites More sharing options...
Alex Posted September 28, 2005 Share Posted September 28, 2005 If I was building a monster I'd go for 87mm CP pistons and stock length rods...this would make it a slightly larger displacement but with the pistons and rods being stronger and lighter you could use more revs and more boost...which would net more power than just a stroker kit. And like Terry says...try getting another crank of HKS lol! However....Arnout was working on his own stroker kit...which is likely to be much much cheaper than HKS's. Link to comment Share on other sites More sharing options...
Guest Terry S Posted September 28, 2005 Share Posted September 28, 2005 I think I am understanding this a little better now. So, a stroker kit would give you more grint lower down the rev range but would limit you at the top of the rev range. Is that right? Yeah pretty much covers it mate. Link to comment Share on other sites More sharing options...
CJ Posted September 28, 2005 Author Share Posted September 28, 2005 http://www.fordmuscle.com/archives/2003/09/stroker/index.shtml Good find Link to comment Share on other sites More sharing options...
Alex Posted September 28, 2005 Share Posted September 28, 2005 Thanks for the article Mcanny Link to comment Share on other sites More sharing options...
mikeyb10supra Posted September 28, 2005 Share Posted September 28, 2005 cubic capacity cant be rivaled for giving increased torque and power Link to comment Share on other sites More sharing options...
Guest Terry S Posted September 28, 2005 Share Posted September 28, 2005 cubic capacity cant be rivaled for giving increased torque and power Yeah we know that but you must look at the associated advantages/disadvantages. Link to comment Share on other sites More sharing options...
Alex Posted September 28, 2005 Share Posted September 28, 2005 cubic capacity cant be rivaled for giving increased torque and power Yes it can. The max dia of a 2JZ piston it 87mm... The biggest stroker kit it 3.4L... And engine able to run to 9500rpm at 40+PSI using stock sizes will beat the 8000rpm limited stroker. Link to comment Share on other sites More sharing options...
CJ Posted September 28, 2005 Author Share Posted September 28, 2005 Yeah pretty much covers it mate. So, money being no object (obviously thinking of rich guys like Terry here ) would the ideal scenario be to have a stroker kit and a big single? Or am I talking bollocks again! Link to comment Share on other sites More sharing options...
Guest Terry S Posted September 28, 2005 Share Posted September 28, 2005 Yes it can. The max dia of a 2JZ piston it 87mm... The biggest stroker kit it 3.4L... And engine able to run to 9500rpm at 40+PSI using stock sizes will beat the 8000rpm limited stroker. I assumed Mikey is on about at a similar rev limit. Just waiting for Digsy to do a 35,000 word write up for us Link to comment Share on other sites More sharing options...
Alex Posted September 28, 2005 Share Posted September 28, 2005 The 2JZ IMO is already stroked....don't forget the RB26, 1JZ (2.5) and 2JZ are all from the same development project...Nissan went for Revs the "JZ went for GT driveability. Think of it as a stroked 2.6 Link to comment Share on other sites More sharing options...
CJ Posted September 28, 2005 Author Share Posted September 28, 2005 Yes it can. The max dia of a 2JZ piston it 87mm... The biggest stroker kit it 3.4L... And engine able to run to 9500rpm at 40+PSI using stock sizes will beat the 8000rpm limited stroker. But 40+ psi is 2.8 bar Link to comment Share on other sites More sharing options...
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