89sportruck Posted December 19, 2008 Share Posted December 19, 2008 looking for a little more kick out of my 4.0, any sugestions? Link to comment Share on other sites More sharing options...
JeepcoMJ Posted December 19, 2008 Share Posted December 19, 2008 looking for a little more kick out of my 4.0, any sugestions? bore or stroke it or both. supercharger is $4000 for the kit, and ALOT of time and money on the dyno to put together your own kit. Link to comment Share on other sites More sharing options...
89sportruck Posted December 19, 2008 Author Share Posted December 19, 2008 well you want me to just about rebuild the hole thing so why not? Link to comment Share on other sites More sharing options...
JeepcoMJ Posted December 19, 2008 Share Posted December 19, 2008 well you want me to just about rebuild the hole thing so why not? not sure I understand your question. the supercharger WILL cost you much more, AND you'll have to rebuild the motor first to have a dependable motor before supercharging.... Link to comment Share on other sites More sharing options...
DirtyComanche Posted December 19, 2008 Share Posted December 19, 2008 I saw a DIY setup using a 3.8 Thunderturd (Thunderbird for the slow guys) S/C. It only ran about 5 or 6psi of boost, I guess. Some google usage might yield more details. However, it cost more than a stroker in the end, I think... And 6psi on a tired 4oh is asking for trouble. I'm not one of those guys who believes these things are bombproof. Link to comment Share on other sites More sharing options...
GaruMJ Posted December 19, 2008 Share Posted December 19, 2008 I saw a DIY setup using a 3.8 Thunderturd (Thunderbird for the slow guys) S/C. It only ran about 5 or 6psi of boost, I guess. Could you please put the link where you saw it? :cheers: I can´t find it...... :roll: Link to comment Share on other sites More sharing options...
MiNi Beast Posted December 19, 2008 Share Posted December 19, 2008 well could rebuild it and bore it out. Blue print or balance the engine Or you could just put a cam in it and get like 75hp from that. Rollor Rockers to free up some hp. 62mm throttle body, electric fan conversion, new head. Stage I or II chips. Many ways to had hp and staying under that price of the supercharger. What are you looking to gain? Link to comment Share on other sites More sharing options...
BLHTAZ Posted December 19, 2008 Share Posted December 19, 2008 A supercharger will do nothing but destroy an old engine. Do as these guys have suggested and have it stroked :thumbsup: Link to comment Share on other sites More sharing options...
Pete M Posted December 19, 2008 Share Posted December 19, 2008 Before doing anything drastic I would: -give it a tune up (including making sure all the sensors and in good shape) -eliminate any restrictions (poor mufflers/intakes or clogged cats) -new fuel injectors (5.0 mustangs) -Timing chain (to get everything beck into spec) -gears, gears, gears. If you want a real kick in the pants, gearing will give that to you in spades. :thumbsup: Even street-based MJs can get huge benefits from a bump in gear ratio. Link to comment Share on other sites More sharing options...
DirtyComanche Posted December 20, 2008 Share Posted December 20, 2008 well could rebuild it and bore it out. Blue print or balance the engine Or you could just put a cam in it and get like 75hp from that. Rollor Rockers to free up some hp. 62mm throttle body, electric fan conversion, new head. Stage I or II chips. Many ways to had hp and staying under that price of the supercharger.What are you looking to gain? How do you expect to see 75HP from a cam? Maybe 7.5. Roller rockers are worth maybe 2 at most, if that... E-fan, like 6HP? A HO head is worth something, but not a lot... Might as well do the late style intake as well. But still... Bored TB should be worth 1 or 2, add a performance header and see another 5 or 6 at that point. It's not like building a LS1 or a modular Furd. Link to comment Share on other sites More sharing options...
MiNi Beast Posted December 20, 2008 Share Posted December 20, 2008 well could rebuild it and bore it out. Blue print or balance the engine Or you could just put a cam in it and get like 75hp from that. Rollor Rockers to free up some hp. 62mm throttle body, electric fan conversion, new head. Stage I or II chips. Many ways to had hp and staying under that price of the supercharger.What are you looking to gain? How do you expect to see 75HP from a cam? Maybe 7.5. Roller rockers are worth maybe 2 at most, if that... E-fan, like 6HP? A HO head is worth something, but not a lot... Might as well do the late style intake as well. But still... Bored TB should be worth 1 or 2, add a performance header and see another 5 or 6 at that point. It's not like building a LS1 or a modular Furd. Just giving a rough estimate on the claims of each thing, needless to say my point was you can get alot out of a 4.0 without having to put out a check for 4 grand on a blower. Link to comment Share on other sites More sharing options...
smithe1811 Posted December 20, 2008 Share Posted December 20, 2008 well could rebuild it and bore it out. Blue print or balance the engine Or you could just put a cam in it and get like 75hp from that. Rollor Rockers to free up some hp. 62mm throttle body, electric fan conversion, new head. Stage I or II chips. Many ways to had hp and staying under that price of the supercharger.What are you looking to gain? You can buy all that for a renix? Where? Link to comment Share on other sites More sharing options...
MiNi Beast Posted December 20, 2008 Share Posted December 20, 2008 renix block is the same so bore it out, intake is different so swap it out, always can cam it, new headers, new head, just need to do some research but you can do anything if you want to. A few links but check out the links thread for a lot of info and products... http://rustysoffroad.com/mm5/merchant.m ... de=PER_AIR http://www.rockcrawler.com/techreports/ ... /index.asp http://www.speedomotive.com/ps-147-15-j ... k-kit.aspx http://www.greatlakes4x4.com/showthread.php?t=661 Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now