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  #1  
Old 09-18-2013, 08:56 PM
PrecisionBuilt PrecisionBuilt is offline
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Join Date: May 2013
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Default heads/intake match. shaving heads

Ok, I'm wanting to tackle a good sized project this coming weekend or the next. I see a lot of ford rangers in town. I wanna keep my reputation as the best. Here is my ideas. I need input. Any advice is greatly appreciated. I'm wanting to port match my stock heads. And intake/exhaust. New head gaskets. I'd like to have them shaved. But not sure how much. I'd like to mount a Eaton M90 supercharger in place of my upper intake manifold too.(future project). But for now I just wanna smooth out my heads and raise compression. I would like to stay at low to mid grade fuel. And I'm only wanting to run 6-8psi boost. Which I hear is decent out of the M90. Any advice on how much to shave the heads? ? ?. And do you recommend pulling the engine or just removing the top end? I've done head gasket jobs on other vehicles and it was very difficult to torque down the rear head bolts due to the firewall.(95 camaro LT1) lol. Is this a issue for you fellow ranger ppl.? Plz leave your opinion. Helpful critisism is ok. Lol. But encouragement is more appreciated. Haha. Thank you.
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1994 Ranger XLT 2/6"drop. Ext cab.
Boss 304 18x10&18x8 wheels. Billit grill. 10,000k HIDs. All Memphis sound system. Two PR12s custom fiberglass box. 1000watt monoblock & 800w four channel amps.
4.0L V6 Port&Polish. w/ custom CPU program. Flowmaster40 deltaflow side pipe w/tip. Custom intake.
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  #2  
Old 09-18-2013, 09:19 PM
Rangerdaddy Rangerdaddy is offline
Danger 5.0
 
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Default

For that kinda money, wouldn't a 5.0 swap be just as much and A LOT more hp???
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99 xlt, 5.0, torsion bars cranked, 4" body lift, 33" Goodyear Duratracs, 15x10 American racing 5 spoke rims, 2004 ranger edge seats, buggman LEDs in dash, Aussie locker in front, 8.8 with discs and mini spool in rear, blue led underglow.
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  #3  
Old 09-19-2013, 08:08 PM
BarnesboyArmy BarnesboyArmy is offline
Ford Rangers
 
Join Date: Jun 2013
Posts: 208
Default Re: heads/intake match. shaving heads

Nice idea on the port matching and shaving the heads. I honestly have no idea what the limit for that would be but i would say safely 3 off of the heads and your good. Dont know of any heads that cant get at least that much shaved. i have the head off a 1985 lebaron 2.2l shaved 5.
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Barnes, Michael
2002 Ford Ranger XL 4.0 Stepside no power options.
Pioneer head unit, alpine speakers 5x7 in front doors.
Viper Alarm System with Remote Start.
Currently Deployed so gaining any information for return in advance.
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  #4  
Old 10-13-2013, 01:33 PM
PrecisionBuilt PrecisionBuilt is offline
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Default Re: heads/intake match. shaving heads

Ok. I've talked to a few performance shops in town. And I I've been told I can shave them down as far as I want. As long as the valves don't touch the pistons. But also depending on what octane fuel I wanna run. I'm only gonna take of about 0.05-0.07in. And I am gonna adjust my boost later to up my total compression to around 10:1-10.5:1. That way I can still run a lower octane fuel. And I do agree a 5.0 swap would be better than building a 4.0. But after all my research I have found that a 4.0L V6 is one more HP and only 30ft/lbs less than a 95 5.0L V8. And I feel that after I am threw with my mods I can easily gain 30Ft/lbs. The only big difference is yes there is a lot more potential for a 5.0 than a 4.0. But I have a built LT1 for a camaro/drag car. I just wanna build this truck for a mean daily driver. Also I just wanna see what it can do. The 4.0L has a mean reputation. I'm just here to raise the bar. And earn some respect for V6 trucks. Haha.
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1994 Ranger XLT 2/6"drop. Ext cab.
Boss 304 18x10&18x8 wheels. Billit grill. 10,000k HIDs. All Memphis sound system. Two PR12s custom fiberglass box. 1000watt monoblock & 800w four channel amps.
4.0L V6 Port&Polish. w/ custom CPU program. Flowmaster40 deltaflow side pipe w/tip. Custom intake.
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  #5  
Old 10-13-2013, 07:40 PM
JDU JDU is offline
Ford Tough
 
Join Date: Sep 2012
Posts: 334
Default Re: heads/intake match. shaving heads

You're not gonna run 10:1-10.5:1 on "lower octane fuel" and definitly not with a supercharger. You'd have to take out enough timing to defeat your purpose and melt the cats.
Sorry to sound negative but you'll do better at 9:1 if boost on 89 octane is your goal and you'd still do better with 93 octane.
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2003 Ranger XL 2WD AT with a 4.0 from a 2010 Mustang (61,000 mi) new 03 ranger injectors
Rebuilt the 8.8 with Richmond 4.10 gears, Timkin bearings and rebuilt the Trac-lok, 245/70/16 Michelin-X Radial LT2
18 mpg, all city driving. 03 Rangers don't have egr.
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  #6  
Old 10-13-2013, 10:53 PM
BarnesboyArmy BarnesboyArmy is offline
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Posts: 208
Default Re: heads/intake match. shaving heads

Know what you mean there in wanting a bad 4.0 my motor plans are going to run me around 7000 which I could do a 5.0 swap twice over. But like you I want a bad daily 4.0.
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Barnes, Michael
2002 Ford Ranger XL 4.0 Stepside no power options.
Pioneer head unit, alpine speakers 5x7 in front doors.
Viper Alarm System with Remote Start.
Currently Deployed so gaining any information for return in advance.
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  #7  
Old 10-15-2013, 11:23 AM
PrecisionBuilt PrecisionBuilt is offline
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Default Re: heads/intake match. shaving heads

Considering the difference in displacement between a 4.0L V6 and the 5.0L V8. I'm making a few more horses than a stock 5.0L. And only 30ft/lbs less. But consider the weight difference. I'm taking my engine to my cousin's shop later this week. (Precision Auto Machine Mcminnville TN.) I'm just gonna have him mount the Eaton M90 supercharger and finish up my head job and do a full tune. I'll post on here details about what mods are necessary and cost/power of the mods. Also I will degree in my camshaft and make necessary adjustments on the ignition timing/idle control. EGR delete. Throttle body spacer/intake and headers.
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1994 Ranger XLT 2/6"drop. Ext cab.
Boss 304 18x10&18x8 wheels. Billit grill. 10,000k HIDs. All Memphis sound system. Two PR12s custom fiberglass box. 1000watt monoblock & 800w four channel amps.
4.0L V6 Port&Polish. w/ custom CPU program. Flowmaster40 deltaflow side pipe w/tip. Custom intake.
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  #8  
Old 10-15-2013, 06:55 PM
BarnesboyArmy BarnesboyArmy is offline
Ford Rangers
 
Join Date: Jun 2013
Posts: 208
Default Re: heads/intake match. shaving heads

Will be very interested to hear a little about it. Dont know if I want to go M90 or M112 supercharger on mine. I plan to stroke mine to 4.3 and get heads and cams as well. Hearing how you feel about the M90 might help me make up my mind.
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Barnes, Michael
2002 Ford Ranger XL 4.0 Stepside no power options.
Pioneer head unit, alpine speakers 5x7 in front doors.
Viper Alarm System with Remote Start.
Currently Deployed so gaining any information for return in advance.
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  #9  
Old 10-22-2013, 11:20 AM
4x4fordcowboy 4x4fordcowboy is offline
Ford Off-Roader
 
Join Date: Jul 2013
Posts: 457
Default

Be careful with shaving and the supercharger, if you shave too much you can create too much compression and damage your engine terribly if not blow it apart, (it's only a 4.0l engine) and since you plan on shaving AND the super charger id think you'd have to run less than 6psi on stock internals, 5 psi seems to be common (if you're using them) most people I know of that have chargers in their ranger have installed water/methanol injection to keep the temp down, and that's without shaving the heads, now this is all observation and talking with other people, just my 2cents.
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  #10  
Old 10-23-2013, 01:39 PM
cowboybilly9mile cowboybilly9mile is offline
Ford Ranger Driver
 
Join Date: Mar 2010
Posts: 4,897
Default Re: heads/intake match. shaving heads

There is one thing you need to do and one more you need to know:

a) tickle the keys on your calculator to determine the actual change in compression ratio for shaving off, .001". Then, knowing this, you can simply multiply this result by what you're thinking about shaving off to determine the mechanical compression ratio.

b) When you shave heads on a v-style engine you are relocating the centerlines of the fasteners common to the intake and heads. IE, you are altering the geometry and considerations must be made so that you don't mill too much. So there comes a point in time that you won't be able to bolt the intake on. Nice.

I went through this longgggggg ago when I was looking at things to do to a SBC, and what I found was that you can't mill the heads enough to deliver any meaningful compression increase without hosing up the geometry as I just described. I hope I didn't just rain on your parade, perhaps at this point a SOHC or a 5.0 will start to make better sense, depending on what your final objective is.

Speaking of objective, did you notice my usage of the words mechanical compression ration? This is because there are two compression rations, mechanical and effective. The effective compression ration will be heavily influenced by the cam timings, lift, duration and overlap. These two ratios do work together to deliver the final result. Because of things like this and unless you want to go down the road of spending lots of money without the desired result, you really need to sit down and think about the big picture and what it's going to take to get there. Builds are a package deal with properly and carefully selected components all working together as a team. And it surely won't be implemented in a weekend. But ill fated or poorly planned attempts might, however they will in "best reputation" although I'm certain it's not the reputation most guys would want.

*Make my day, drop in an 3.5 TTecoboost from an F-150, 365 ponies, 420lb-ft right out of the box. Nice quiet exhaust, a sleeper, and you'll have a earned reputation (that's the only way people get it, they earn it) to be proud of.
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gasket, heads, intake, shave, supercharge

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