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Stroker or Supercharger

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Stroker or Supercharger TJ? What would u do & why?

24K views 63 replies 32 participants last post by  aparke4 
#1 ·
Planning on doing the 4.9 Stroker soon, but I like the Supercharger idea for the YJ. Not realistic to do both (over kill, I think) so lets see what you guys think?

Anyone who has done this and what they think would be great too.
 
#5 ·
Do what you want I went the supercharger route with RippMods I love it. I've had no issues. I installed in a day and I am a backyard mechanic. I can tell you that their customer service is better than any other company I've worked with. I still miss my 304ci V-8 Cj-5 however so take this with a grain of salt.
 
#9 ·
I've never really been a fan of turbos because it takes time for them to spool up, also all the oil lines and how problematic they can be, although they create incredible amounts of boost. I'd go for a centripetal supercharger. Although it creates small amounts of boost, It's fairly cheap, easy to install, and sounds pretty cool too. A stroker wouldn't be a bad idea either, but I would imagine that a turbo wouldn't be the best idea for a trail rig. Supercharger gets my vote. :2thumbsup:

Edit: Here is some very good information about Superchargers and Turbochargers.
YouTube - Forced Induction - Supercharger vs. Turbo Charger
 
#14 ·
When I've got 5000 lbs in the bed of the 8000 lb truck towing a 3000 lb trailer with a 4500 lb rig on it and the trailer has a weeks worth of firewood, water, spare parts, and fuel on it, I'm quite pleased that the tow rig has a turbo on it. :rofl:
 
#20 ·
If your current motor is in good shape, I'd say supercharger. If it needs rebuilt anyways, do the stroker. The 4.9L is a waste of money though. It's WAY more expensive than a regular 4.6/4.7L stroker and doesn't get you that much more. If you are going to spend the money on a 4.9L, just do the v8 swap. The main attraction to a stoker (I6 jeep motor that is) is the bang for the buck. You loose that value with the 4.9L.
 
#32 ·
Not true. The Titan 4.9L Stroker is $3,500 which is the same price for the Golen 4.7 Stroker. However, the 4.7 from Titan is about $900 cheaper than the 4.9L. I spoke to both company's and I like the back ground and detail work done to the Titan motors. The 4.9L will give you 315hp and 345 on the torque. The 4.7L 285hp and 310 torque. Yes, more money, but more power I feel well worth the price. With that much power does one really need the forced induction?
 
#21 ·
4.6/4.7 is great for tons of cheap power. Supercharger would be great for a DIY guy with no engine building skills (me). In time, when I need more power, I'll stroke mine. The 4.0 has been a great engine, and I'd like to continue it's service.
 
#26 ·
Planning on doing the 4.9 Stroker soon, but I like the Supercharger idea for the YJ. Not realistic to do both (over kill, I think) so lets see what you guys think?

Anyone who has done this and what they think would be great too.
How much time do you have to complete the modifications? If the engine is performing well as it sits now and you do not have a lot of time, the supercharger may be your best bet.
 
#28 ·
So how much do you want to spend??

stroker + boost is the best option for a torque motor and a great sounding engine IMO.

If I had the extra money I'd just go with ripp's supercharger since it's a day job and has a lot of people (who actually own it) backing it up.
 
#29 ·
I own a turbo car and love it! I've driven many other turbo vehicles and they're all a blast. I have built up and tuned my system over the years, and helped others work on their cars. However, a turbo gas engine would be my last choice on the trail. Throttle response, never mind lag, will NEVER be the same (unless you want to run anti-lag, and you don't). Premium fuel will need to be run to get the most out of it and keep the "knocks" away. And lets not get started on RELIABILITY. Sure you can throw some forged low comp pitsons (yes, 8.8 is fairly low) and even a stroker, but then you're getting in used LS1 territory. V8 swaps aren't the most difficult or expensive ways of making power. I fourth the V8 swap!

Nevermonday- I appreciate your shared enthusiasm for turbos, but I have to ask, how did he turbo a Jeep for under $1000? Obviously a used turbo, injectors, fuel pump, and DIY tuning was in order. Is he a welder? Most fab shops would look at the whole same sided intake/exhaust layout and instantly quote 1k just for a manifold. Does he have a buddy that gives him free dyno time? That's not cheap either. Not trying to stir anything up, I'm just curious...
 
#30 ·
Again, you guys are confusing swaping a small displacement turbo engine into a jeep with putting a turbo on a 4.0L+ I6.

YOU ARE NOT GOING TO LOOSE LOW END POWER BY ADDING A TURBO TO YOUR 4.0L!!!!!!!!!

You are just not going to gain anymore low end power, unless you run a pretty small turbo, then you might get some more umphf below 1500rpm. I don't know about you guys, but I don't need anymore low end grunt for off road, just more power to push my barn door down the highway.

Please think about the actual application of what you are talking about.
 
#39 ·
Not so much detail than not seeing where the extra grand is coming from... You get all the seasoning and machine work with Titan that you get with Golen, but the price difference becomes confusing. Look, I'm sure that both are great builders.

As for the additional item, yes I know what it takes. I just like to hear what others are doing, planing, and thinking about when it comes to forced induction or strokers.

One of the facts that I have come to terms with is that my present power plant is very healthy at nearly 90K miles. So, why rip it out to replace it with a stroker when a simple supercharger will work just fine for my needs.

Just learning by listening...
 
#34 ·
from my limited knowledge id agree with almost everyone above. you wont lose any low end grunt but your not going to gain anything off the line. if its also a dd i would go with a turbo instead of any other option. if you can manage to stay out of boost, you can get good (for a jeep) gas mileage. with a supercharger your always boosting unless your completely off the gas. i want to eventually turbo my wj so maybe im biased. just my 0.02
 
#35 ·
Every time I read a thread on Jeep forums about forced-induction I die a little inside. Get frustrated, and can normally only bring myself to post something about lots of mis-information...

Reality for most people, you should do what best fits your mechanical ability and budget...
If it were me, I would without a doubt go 3/4 Gen Chevy V-8.
 
#38 ·
I love these threads! Blaine, I have seen your truck and its massive! My wife loves your camper! I hope I can haul my family / jeep / trailer up on a run during the holidays! I just got an 8.1L Suburban and looking forward to seeing if that 450 ft lbs can pull it all. I wanted a diesel, but was scared to deal with a used one.

I know one of you JF guys (I forgot who) put supercharger on his. It has a highway shutoff so that its not wasting gas. Then he scored a sweet older 4.2L and used it to stroke is motor too! So don't ask which one, do both! FYI: He said he ran 6lbs with the supercharger and lost 3lbs after stroking. So stroking gives you the equivalent of 3lbs boost (based on his 4.6). So he changed a pully out and put it back to 6lbs of boost. I think I read someplace that each lb of boost is about 12 ft lb. I like the 4.6 for reliability, don't forget to tune it!

<<>>EDIT FOR GRAMMER AND MISSUSE OF WORDS.....and BTW the supercharger that this guy had was an Avenger.
 
#40 ·
First off, Titan has HORRIBLE reputation, at least on naxja.org and jeepstrokers.com. I have read many people describe all different kinds of failures from them. Just do a search on those forums. That being said, I have never ran a titan stroker (nor will I) so this is all second hand internet "knowledge" so take it for what it's worth, and also, I just had to replace my camshaft in my Golen stroker, so they aren't perfect either. Lastly, unless Titan is using an expensive custom offset ground crank, their stroker is NOT a 4.9L as they advertise, and I doubt they are for that price.

Bottom line, 258 crank =

4.5L stock bore
4.6L .030 over bore
4.7L .060 over bore
4.8L with a 4" bore, and you are REALLY pushing the thickness of the cylinders walls at this point

Anything with larger displacement is going to require using longer stroke than a stock 258 crank. Also, the small gain in displacement doesn't do much for you, especially considering the cost in parts that CAN'T be picked up at autozone for under $200.
 
#42 ·
People who make general statements about power adders, what they can and can't do, and where they do and do not belong have no idea what they are talking about and should stop commenting. You are not speaking from any real world experience and you are just repeating what you heard some other guy repeating about what they read on the internet.
 
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