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Performance stroker characteristics

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Old Jun 24, 2004 | 02:39 AM
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Performance stroker characteristics

Hi guys.
I have an EVO VI TOMMY MAKINEN.
I' m in deep thoughts just right before adding some serius power to my EVO.
The question now is how performance characteristics change after a stroker kit 2.2 or 2.3.
Do we still have the high rev ability (~9000 rpms) as with 2000 cc engine or the rev limits now are lower than before and the access time is also bigger.
I quess that torque will be increased in all rpm range, or not ?

I need your advice what to do, you experts. To use a stroker or not ? and if yes which is better 2.2 or 2.3 ?

Thanks in advance and congrats for the forum.
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Old Jun 24, 2004 | 04:08 AM
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I would take a look on MLR (www.lancerregister.com). A lot of people on the (over here in the UK) are using strocker engines. I think they are a good idea as there is no replacement for displacement! You will see an increase in torque and power as well as a much more tractable engine with better off boost characteristics. You would be as well speaking to moses evo on here (moses on MLR) about it, he was after a huge torque motor and he will be able to help as has gone through all the problems (all of them and more)!!!

Norris Design uses the JUN 2.2ltr (2159cc) to make 800+bhp at 2.1 bar (there should be some more to come from the turbo) and I think this is reputed to be the bet stroker in the world. It will rev to 8500rpm no problems yet still give you the added cc that you need. I think it also maintains a good rod length ratio which troubles some strokers out there. It also requires no grinding work to the bottom of the engine which does make a change to some of the cheaper kit out there. Norris’s site is www.norrisdesigns.com from there you can speak to Simon about the kit!

There are a few people using 2.3ltr strokers. This can either be by a proper stroker, such as Boost Solution’s soon to be released stroker, or by using a 4G64 crank! Boost solutions strocker is reputed (by them) to be able to rev to 9000rpm. I am some what sceptical about this as the smaller (lighter) JUN kit is normally only revved to 8.5K. They have also said that it will withstand 1000bhp which should be good.

RC Developments over here also do a strocker and they have got over 900bhp out of these, again a 2.3.

Another option is to go for a 4G64 block with an EVO head on there. Rnr Racing is producing one (I think they have finished it now), I’m not too sure of the cost (I think about $9k) and would defiantly be the choice if you are solely after torque. Some of the DSM boys use these and you can easily get 500+bhp front one with 500+lbsft no problems on pump gas (with water injection)! This option also allows you to use one BIG turbo. RnR is using their GT35R with the BIG exhaust housing (a good choice I think) and say they are getting full boost by 3600rpm I think!

Be careful of what people are offering on the 2.3ltr strockes though! Many are rods and pistons on a 4G64 crank! These are often not worth the money as you could build the kit yourself for a lot less money (that’s what moses did).

It depends on what you are after. My personal recommendation for the car would be the JUN kit! It has bin tried and tested and will still let you rev the engine. Stick a nice GT3235 turbo on there (or even a GT35R) and you will have a very nice set up!

S**t. I can go on for ever about these things! Anything I have missed out then just ask!

Thanks Chris!
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Old Jun 24, 2004 | 05:33 AM
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Thank you very much Chris for your detailed and long post.
For sure i 'll ask moses for his advice.
Best regards
Stratis
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Old Jun 24, 2004 | 10:21 AM
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Great write-up.

Thanks,

- Nellie
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Old Jun 24, 2004 | 12:47 PM
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Can a stroker kit be used on a stock setup with only intake and exhuast. I want peak tq by 3k RPM. Also this is to be a daily driver and only car. It has to be 100% street friendly. What is the minimum amount of mods required for this
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Old Jun 24, 2004 | 01:32 PM
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Old Jun 25, 2004 | 01:44 AM
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You can put a strocker in when ever you want. It is only like replacing your stock internals for forged! You may not be making the most out of it on a stock turbo, but that doesn’t mean it can’t be done! It will require some mapping though (well additional fuelling). When Boost Solutions put their 2.3ltr strocker in there motor they had to increase fuelling by 15% at idle and about 20% higher up the range (I think those figures are right)!

Extreme/Ralliart offers a 2.3ltr kit for the stock EVO. The kit is very expensive but you do get the intake and exhaust, up rated clutch, MoTec ECU (mapped), up rated pump, and some other stuff. On the stock motor, the kit will give you 400+lbsft of torque but only 340bhp! I think this is because the extra air required with the strocker causes the stock turbo to run out of puff earlier!

You then come to a bit of a cross roads. You could go with a stroker on the stock turbo, or (in the UK at least, and over there soon I hope) go down the ball bearing stock turbo route! You can get good results from both. If you look in this section you will see a thread about ball bearing stock turbos. Have a read it could be another more feasible route!

The mods you will need would be much the same as if you where modding on a stock engine. You will require more air in and out (intake and exhaust) and more fuel (pump possibly injectors) and some sort of mapping (standalone would be best but I think you could get away with a remap). A clutch would also be a good idea as you will be seeing much more torque across the rev range!

If you do go for the strocker, with the above mods, then you will have a very tractable motor. I’m not sure if you will see peak torque that low down, but you will see the turbo up to speed a good 500rpm lower!

I have gone on again! If you want more info have a word with Boost Solutions or RnR and see what they have to say.

Thanks again Chris.
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Old Jun 26, 2004 | 12:58 AM
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Originally Posted by chuntington101
You can put a strocker in when ever you want. It is only like replacing your stock internals for forged! You may not be making the most out of it on a stock turbo, but that doesn’t mean it can’t be done! It will require some mapping though (well additional fuelling). When Boost Solutions put their 2.3ltr strocker in there motor they had to increase fuelling by 15% at idle and about 20% higher up the range (I think those figures are right)!

Extreme/Ralliart offers a 2.3ltr kit for the stock EVO. The kit is very expensive but you do get the intake and exhaust, up rated clutch, MoTec ECU (mapped), up rated pump, and some other stuff. On the stock motor, the kit will give you 400+lbsft of torque but only 340bhp! I think this is because the extra air required with the strocker causes the stock turbo to run out of puff earlier!

You then come to a bit of a cross roads. You could go with a stroker on the stock turbo, or (in the UK at least, and over there soon I hope) go down the ball bearing stock turbo route! You can get good results from both. If you look in this section you will see a thread about ball bearing stock turbos. Have a read it could be another more feasible route!

The mods you will need would be much the same as if you where modding on a stock engine. You will require more air in and out (intake and exhaust) and more fuel (pump possibly injectors) and some sort of mapping (standalone would be best but I think you could get away with a remap). A clutch would also be a good idea as you will be seeing much more torque across the rev range!

If you do go for the strocker, with the above mods, then you will have a very tractable motor. I’m not sure if you will see peak torque that low down, but you will see the turbo up to speed a good 500rpm lower!

I have gone on again! If you want more info have a word with Boost Solutions or RnR and see what they have to say.

Thanks again Chris.
You always be very helpfull, thanks alot again Chris.
I think that i made up my mind now. This is the total list.
I 'll follow the 2.3 custom stroker sollution. EMS it's not a problem and an AUtronic is on the way right now. Also a big Ball Bearing monster enough to carrie out 800 hp. One Walbro 255 lb pump is in position wright now and an external Bosch in future plans. 1000 cc RC injectors and an HKS fuell rail too. HKS 272 both cams. Cusco double clutch and maybe rear differential
80 mm custom titan exhaust with Top Secrets Titan muffler, the same i have in my Audi S3. Titan valves and retainers....... It's a lot of Euros or USD in anyway. But at least it's not a problem to find all this stuff because i put mass orders of all these things for my Tuning shop and workshop also.
This is my website : www.stratisautosport.gr
I 'll let you know of the progress but i don't know exactly when i'm starting to build it cause i'm getting married in two months. There are a lot of things to deal with them now. But at least i want to have all the necessary stuff to my self and to start when i have finished from the marriage story.....
My best Regards,
stratis
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Old Jun 28, 2004 | 01:36 AM
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sweet mate! you definatley have some BIG plans. you will have a monster, hope its not your only car! LOL

what turbo you looking at running? i would go for a GT35R or even a GT3540! the latter is a real monster and will let you amke 800bhp no problems. Whats the cost of the custom 2.3ltr strocker? i only ask coz you could make similar power from a JUN 2.2 and that would jet you run higher rpm and a smaller turbo (you could get a way with a GT3235 and still make 800bhp, well Simon Norris has). just a thought!

i would take a look at the fueling side to. Norris Design has trobule getting enough fuel through when he was running 1000cc injectors to produce 770bhp. you could go for some monster 1600cc injectors, but i recon you would be better off with a twin injector set up! take a look at Norris's web site (www.norrisdesigns.com) as thats what he is ruuning now! should help with idel to as you can run the inner set until you need the extra flow.

Cusco clutch will be a def and you will need thier rear diff to!

keep me posted mate as this looks to be a monter build. thanks Chris.

PS. where abouts in the world are you?
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Old Jul 4, 2004 | 10:17 PM
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Hi Chris,
As for the turbo i have already a huge HKS T51R KAI ready to fit to my new setup.
The cost of this mod it's not representable for everyone due to my imports directly to specific brands. Although you need an extra heavy pocket to deal with. You 're wright about fuelling. 1000 cc injectors it's not an easy fuelling job. We tried to setup a friends EVO VI a couple a months ago with success using Autronic EMS. My plan is to use 1000 or 1200 ones.
I live in Greece and yes i can accept your congratulations for our national football team who won the European Football Championship last night.

Best regards
(P.S : I'll keep you inform about the progress)


Originally Posted by chuntington101
sweet mate! you definatley have some BIG plans. you will have a monster, hope its not your only car! LOL

what turbo you looking at running? i would go for a GT35R or even a GT3540! the latter is a real monster and will let you amke 800bhp no problems. Whats the cost of the custom 2.3ltr strocker? i only ask coz you could make similar power from a JUN 2.2 and that would jet you run higher rpm and a smaller turbo (you could get a way with a GT3235 and still make 800bhp, well Simon Norris has). just a thought!

i would take a look at the fueling side to. Norris Design has trobule getting enough fuel through when he was running 1000cc injectors to produce 770bhp. you could go for some monster 1600cc injectors, but i recon you would be better off with a twin injector set up! take a look at Norris's web site (www.norrisdesigns.com) as thats what he is ruuning now! should help with idel to as you can run the inner set until you need the extra flow.

Cusco clutch will be a def and you will need thier rear diff to!

keep me posted mate as this looks to be a monter build. thanks Chris.

PS. where abouts in the world are you?
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Old Jul 5, 2004 | 10:35 PM
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Just had the GTM 2.3L kit installed in my EVO and it is very good. The car idles well and revs to 8500 no problem. These guys are very good and have one of the best facilities I have ever seen. www.gtmotorsports.com.
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Old Jul 5, 2004 | 10:45 PM
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I tried there website and wasn't able to get much out of it (maybe it is down). Can you provide me with as muhc info as possible on the 2.3 stroker kit. I posted the following before and would like to know how you are running the kit:

"Can a stroker kit be used on a stock setup with only intake and exhuast. I want peak tq by 3k RPM. Also this is to be a daily driver and only car. It has to be 100% street friendly. What is the minimum amount of mods required for this"

Thnx Bro
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Old Jul 6, 2004 | 04:58 AM
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looks good Fast Evo. a couple of points about this kit. the Toda kit uses the stock 4G64 crank i think. most of the guys in the UK say they are only safe to 7.5K rpm/650bhp! but i guess it is balenced so that will help! also have you had it fitted yet? i heard that they requier some machining work on the bolck to give clearance for the rods! also you know what the rod length ratio is?

what other mods are you running? what turbo etc????

Guack007, as said before mate, you best off speaking to the people that make these things, see what they say! if you want a daily drive then i would leave the bootom end alown! just put some high lift cams in (JUN, Tpomei or Piper), do the intake an exhaust, get a standalone and someone good to map it, hard piping etc, etc. all the normal stuff. with the right set up you will get better spool up and more power! strockers are best if you are upgrading your turbo as the stock one will run out of steam very early!

Stratis, that is one big turbo mate. you copying boost solutions then with your set up? hehe. i would have gone for the GT3540/42 myself (thats GT35 exhaust with GT40/42 compressor) but there you go! still be nice when that turbo wakes up! and think of all that torque!

thanks Chris.
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Old Jul 6, 2004 | 03:12 PM
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Old Jul 6, 2004 | 04:21 PM
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Here is a complete list of upgrades- 2.3L Stroker - Port and polished heads with over sized Ferrea valves springs and retainers - RC Engineering 900cc injectors and throttle body - AEM EMS and Cam Gears - HKS 272 Cams - Turbonetics built T3/T4 - DC Sports Downpipe, Exhaust, and very soon the Manifold - The current manifold has been custom built but will be changed - Ported stock upper intake - Nology plugs and wires - Walbro fuel pump - ACT clutch - Balance shaft eliminator - I am sure that there is more that I am forgetting but that is it in a nut shell..... Call 949-989-2278 and talk to Sam...
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