To cam or not to cam? 4.0 OHV

*jd4242* · 11-20-2011, 05:42 PM

Quote:

Originally Posted by Xeek

glad to hear it went well with your build and everythings good now. makes me wish i took my time on mine

Or used new lifters

*Xeek* · 11-20-2011, 06:02 PM

that too lol. but i wish i did some porting and got a new wire harness that wasnt hacked up. my engine bay is ugly.

*Dono* · 11-20-2011, 08:37 PM

Well, I had to do mine twice Xeek. Maybe you will want to do it again next spring. It took me about 12 hours labour. Not too bad, really.
Costs still added up though. Gaskets, valves, machine shop, fluids.....

There really are no shortcuts.

*jd4242* · 11-20-2011, 08:43 PM

Quote:

Originally Posted by Dono

Well, I had to do mine twice Xeek. Maybe you will want to do it again next spring. It took me about 12 hours labour. Not too bad, really.
Costs still added up though. Gaskets, valves, machine shop, fluids.....

There really are no shortcuts.

I don't know if you know but i did mine 3times.once with the 410cam and stock heads,once with 422 cam and 95tm heads and last built because i didn't test the heads before i put them on and a BRAND new head had crack,last time i shaved and did p+p work.i agree there is no short cuts and don't cut corners on engine builds for sure !!i pulled the motor the first and last build though.

*Xeek* · 11-20-2011, 08:50 PM

yea, two heads thinking the other one tightened the water vally bolt inside the head when neither actually did.. rushing things. lol
if i get around to it, i think this would be considered number 3 and itd be the same as you then. we didnt pull it for the valve seals and pushrods. lol
im gonna keep the 410 tho. just p+p heads and intake, new lifters, paint my headers. NEW A4LD!!

im pretty sure i can pull it by myself now jd. simple process. ill try to have the whole front end off anyway when i do it. i want to do a through cleaning.

why is there no pictures or videos in here???

*Dono* · 11-21-2011, 11:34 AM

I don't have much for pic's. I was great for pic's the first time since it was all a new experience, but the second go round I couldn't get good pics of anything that was worth shooting.

Maybe a good video of me swearing the odd time with a dropped bolt or socket that fell and didnt hit the ground would have been funny. Or maybe the push rod that fell thru the valley when installing, after the lower intakes on? Yup, some good swearing there.

*Dono* · 11-21-2011, 02:04 PM

Just a quick thought on compression. Couldn't I use an SOHC spark plug? It would extend in to the cylinder about 1/4 inch and up compression a bit more. With the angle of the plug, it doesn't look like it would contact the piston at all.

This would up compression a bit more, as the spark plug would displace more of the combustion chamber area. Thoughts?

*jd4242* · 11-21-2011, 02:09 PM

I think and i say i think the only difference in plugs is the temp range .it would be to cold i believe.i think for what little it would take up it would hurt performance more.why are you looking to increase it more?i would look into e fans or under drive the crank if your looking for more power

*Dono* · 11-21-2011, 02:18 PM

I was just thinking out of curiosity. Its that low static compression that has me thinking about this.

It looks like the SOHC's plug is a bit longer, actually made to extend in to the cylinder. e-fan is done. No underdrive pulley though. I'll maybe research heat ranges a bit.

Power? Always thinking of ways that are cheap and reliable.

*jd4242* · 11-21-2011, 02:31 PM

When you did compression test did you do a wet and dry one or just dry?

*Dono* · 11-21-2011, 02:59 PM

Just dry. Im not really burning any oil to speak of. Figured that rules our rings for the most part.

*jd4242* · 11-21-2011, 03:03 PM

Not really true.if you do a wet thats more what the real compression is,ill bet it would be way higher,if not then could be rings causing low compression

*Dono* · 11-25-2011, 04:33 PM

Its a drug. I just can't stop.

*Xeek* · 11-25-2011, 04:40 PM

is that one one for sale on TRS? out of a 97 ranger i think.

*Dono* · 11-25-2011, 04:40 PM

Not my motor. Just seriously entertaining the idea.

*Dono* · 11-25-2011, 04:41 PM

Thats it. Might be a fun thing to do.

*Xeek* · 11-25-2011, 04:42 PM

yea i had thought about buying it. but with the little amount of work i had done, it wouldnt really be worth it

*Dono* · 11-25-2011, 04:55 PM

Tough to know what I'd be getting in to. With low boost, it might be ok without new fuel pump or injectors. Also a tune? Im going to find out. Sure would be a fun thing to do.

*Xeek* · 11-25-2011, 04:57 PM

yes, a tune. i knew i forgot something. thats how jd talked me out of it. due to first gens lack of tuning capabilities

*jd4242* · 11-25-2011, 04:59 PM

How much is it?got a link?

11-20-2011, 06:02 PM	#162
Xeek Elite Explorer Virginia Beach, VA 1991 xlt Join Date: Mar 2010 Posts: 2,752 Vehicle Specs	that too lol. but i wish i did some porting and got a new wire harness that wasnt hacked up. my engine bay is ugly. __________________ DD '94 Ranger XLT = '91 Exploder XLT = 7.3L IDI F350 Toy(sold) = OHV Overhaul = Exploder D44/8.8 SAS Project

11-20-2011, 08:37 PM	#163
Dono Supercharged OHV Winnipeg, Manitoba 00 Explorer XLT 4.0 OHV Join Date: Feb 2009 Posts: 2,084 Vehicle Specs (Original Poster)	Well, I had to do mine twice Xeek. Maybe you will want to do it again next spring. It took me about 12 hours labour. Not too bad, really. Costs still added up though. Gaskets, valves, machine shop, fluids..... There really are no shortcuts. __________________ Rebuilt 4.0 OHV with about 6000 kilometers. M90 Supercharged. Tuned by James Henson. 422 cam, dual rate springs, si valves, polished combustion chambers, Rebuilt lifters and 30 thou shaved heads. Headers, and custom exhaust. Water/meth injection. Aftermarket projector headlights w HID's. Electric fan. DELTA RV CAM FOR SALE. low miles on it.

11-20-2011, 08:50 PM	#165
Xeek Elite Explorer Virginia Beach, VA 1991 xlt Join Date: Mar 2010 Posts: 2,752 Vehicle Specs	yea, two heads thinking the other one tightened the water vally bolt inside the head when neither actually did.. rushing things. lol if i get around to it, i think this would be considered number 3 and itd be the same as you then. we didnt pull it for the valve seals and pushrods. lol im gonna keep the 410 tho. just p+p heads and intake, new lifters, paint my headers. NEW A4LD!! im pretty sure i can pull it by myself now jd. simple process. ill try to have the whole front end off anyway when i do it. i want to do a through cleaning. why is there no pictures or videos in here??? __________________ DD '94 Ranger XLT = '91 Exploder XLT = 7.3L IDI F350 Toy(sold) = OHV Overhaul = Exploder D44/8.8 SAS Project

11-21-2011, 11:34 AM	#166
Dono Supercharged OHV Winnipeg, Manitoba 00 Explorer XLT 4.0 OHV Join Date: Feb 2009 Posts: 2,084 Vehicle Specs (Original Poster)	I don't have much for pic's. I was great for pic's the first time since it was all a new experience, but the second go round I couldn't get good pics of anything that was worth shooting. Maybe a good video of me swearing the odd time with a dropped bolt or socket that fell and didnt hit the ground would have been funny. Or maybe the push rod that fell thru the valley when installing, after the lower intakes on? Yup, some good swearing there. __________________ Rebuilt 4.0 OHV with about 6000 kilometers. M90 Supercharged. Tuned by James Henson. 422 cam, dual rate springs, si valves, polished combustion chambers, Rebuilt lifters and 30 thou shaved heads. Headers, and custom exhaust. Water/meth injection. Aftermarket projector headlights w HID's. Electric fan. DELTA RV CAM FOR SALE. low miles on it.

11-21-2011, 02:04 PM	#167
Dono Supercharged OHV Winnipeg, Manitoba 00 Explorer XLT 4.0 OHV Join Date: Feb 2009 Posts: 2,084 Vehicle Specs (Original Poster)	Just a quick thought on compression. Couldn't I use an SOHC spark plug? It would extend in to the cylinder about 1/4 inch and up compression a bit more. With the angle of the plug, it doesn't look like it would contact the piston at all. This would up compression a bit more, as the spark plug would displace more of the combustion chamber area. Thoughts? __________________ Rebuilt 4.0 OHV with about 6000 kilometers. M90 Supercharged. Tuned by James Henson. 422 cam, dual rate springs, si valves, polished combustion chambers, Rebuilt lifters and 30 thou shaved heads. Headers, and custom exhaust. Water/meth injection. Aftermarket projector headlights w HID's. Electric fan. DELTA RV CAM FOR SALE. low miles on it.

11-21-2011, 02:09 PM	#168
jd4242 Elite Explorer va beach 92 SC Join Date: Oct 2008 Posts: 7,096 Vehicle Specs	I think and i say i think the only difference in plugs is the temp range .it would be to cold i believe.i think for what little it would take up it would hurt performance more.why are you looking to increase it more?i would look into e fans or under drive the crank if your looking for more power __________________ 92 xl 5.5"duff arms,3"BL,PJ 36x14.50,wrapped headers,side dump exhaust,.20 over,HF oil pump,422cam,45cc 95tm p+p 10.67:1 heads,p+p lower manifold,75mm TB,90mm maf,36lbs injectors,P+P GM M90 Supercharged & intercooled!!SCT tuned!!electric fan,4.88s aussie locked front & back!!next NOS&W/M http://www.explorerforum.com/forums/...=double+vision

11-21-2011, 02:18 PM	#169
Dono Supercharged OHV Winnipeg, Manitoba 00 Explorer XLT 4.0 OHV Join Date: Feb 2009 Posts: 2,084 Vehicle Specs (Original Poster)	I was just thinking out of curiosity. Its that low static compression that has me thinking about this. It looks like the SOHC's plug is a bit longer, actually made to extend in to the cylinder. e-fan is done. No underdrive pulley though. I'll maybe research heat ranges a bit. Power? Always thinking of ways that are cheap and reliable. __________________ Rebuilt 4.0 OHV with about 6000 kilometers. M90 Supercharged. Tuned by James Henson. 422 cam, dual rate springs, si valves, polished combustion chambers, Rebuilt lifters and 30 thou shaved heads. Headers, and custom exhaust. Water/meth injection. Aftermarket projector headlights w HID's. Electric fan. DELTA RV CAM FOR SALE. low miles on it.

11-21-2011, 02:31 PM	#170
jd4242 Elite Explorer va beach 92 SC Join Date: Oct 2008 Posts: 7,096 Vehicle Specs	When you did compression test did you do a wet and dry one or just dry? __________________ 92 xl 5.5"duff arms,3"BL,PJ 36x14.50,wrapped headers,side dump exhaust,.20 over,HF oil pump,422cam,45cc 95tm p+p 10.67:1 heads,p+p lower manifold,75mm TB,90mm maf,36lbs injectors,P+P GM M90 Supercharged & intercooled!!SCT tuned!!electric fan,4.88s aussie locked front & back!!next NOS&W/M http://www.explorerforum.com/forums/...=double+vision

11-21-2011, 02:59 PM	#171
Dono Supercharged OHV Winnipeg, Manitoba 00 Explorer XLT 4.0 OHV Join Date: Feb 2009 Posts: 2,084 Vehicle Specs (Original Poster)	Just dry. Im not really burning any oil to speak of. Figured that rules our rings for the most part. __________________ Rebuilt 4.0 OHV with about 6000 kilometers. M90 Supercharged. Tuned by James Henson. 422 cam, dual rate springs, si valves, polished combustion chambers, Rebuilt lifters and 30 thou shaved heads. Headers, and custom exhaust. Water/meth injection. Aftermarket projector headlights w HID's. Electric fan. DELTA RV CAM FOR SALE. low miles on it.

11-21-2011, 03:03 PM	#172
jd4242 Elite Explorer va beach 92 SC Join Date: Oct 2008 Posts: 7,096 Vehicle Specs	Not really true.if you do a wet thats more what the real compression is,ill bet it would be way higher,if not then could be rings causing low compression __________________ 92 xl 5.5"duff arms,3"BL,PJ 36x14.50,wrapped headers,side dump exhaust,.20 over,HF oil pump,422cam,45cc 95tm p+p 10.67:1 heads,p+p lower manifold,75mm TB,90mm maf,36lbs injectors,P+P GM M90 Supercharged & intercooled!!SCT tuned!!electric fan,4.88s aussie locked front & back!!next NOS&W/M http://www.explorerforum.com/forums/...=double+vision

11-25-2011, 04:33 PM	#173
Dono Supercharged OHV Winnipeg, Manitoba 00 Explorer XLT 4.0 OHV Join Date: Feb 2009 Posts: 2,084 Vehicle Specs (Original Poster)	I think I found a way to some quick power Its a drug. I just can't stop. Attached Images __________________ Rebuilt 4.0 OHV with about 6000 kilometers. M90 Supercharged. Tuned by James Henson. 422 cam, dual rate springs, si valves, polished combustion chambers, Rebuilt lifters and 30 thou shaved heads. Headers, and custom exhaust. Water/meth injection. Aftermarket projector headlights w HID's. Electric fan. DELTA RV CAM FOR SALE. low miles on it.

11-25-2011, 04:40 PM	#174
Xeek Elite Explorer Virginia Beach, VA 1991 xlt Join Date: Mar 2010 Posts: 2,752 Vehicle Specs	is that one one for sale on TRS? out of a 97 ranger i think. __________________ DD '94 Ranger XLT = '91 Exploder XLT = 7.3L IDI F350 Toy(sold) = OHV Overhaul = Exploder D44/8.8 SAS Project

11-25-2011, 04:40 PM	#175
Dono Supercharged OHV Winnipeg, Manitoba 00 Explorer XLT 4.0 OHV Join Date: Feb 2009 Posts: 2,084 Vehicle Specs (Original Poster)	Not my motor. Just seriously entertaining the idea. __________________ Rebuilt 4.0 OHV with about 6000 kilometers. M90 Supercharged. Tuned by James Henson. 422 cam, dual rate springs, si valves, polished combustion chambers, Rebuilt lifters and 30 thou shaved heads. Headers, and custom exhaust. Water/meth injection. Aftermarket projector headlights w HID's. Electric fan. DELTA RV CAM FOR SALE. low miles on it.

11-25-2011, 04:41 PM	#176
Dono Supercharged OHV Winnipeg, Manitoba 00 Explorer XLT 4.0 OHV Join Date: Feb 2009 Posts: 2,084 Vehicle Specs (Original Poster)	Thats it. Might be a fun thing to do. __________________ Rebuilt 4.0 OHV with about 6000 kilometers. M90 Supercharged. Tuned by James Henson. 422 cam, dual rate springs, si valves, polished combustion chambers, Rebuilt lifters and 30 thou shaved heads. Headers, and custom exhaust. Water/meth injection. Aftermarket projector headlights w HID's. Electric fan. DELTA RV CAM FOR SALE. low miles on it.

11-25-2011, 04:42 PM	#177
Xeek Elite Explorer Virginia Beach, VA 1991 xlt Join Date: Mar 2010 Posts: 2,752 Vehicle Specs	yea i had thought about buying it. but with the little amount of work i had done, it wouldnt really be worth it __________________ DD '94 Ranger XLT = '91 Exploder XLT = 7.3L IDI F350 Toy(sold) = OHV Overhaul = Exploder D44/8.8 SAS Project

11-25-2011, 04:55 PM	#178
Dono Supercharged OHV Winnipeg, Manitoba 00 Explorer XLT 4.0 OHV Join Date: Feb 2009 Posts: 2,084 Vehicle Specs (Original Poster)	Tough to know what I'd be getting in to. With low boost, it might be ok without new fuel pump or injectors. Also a tune? Im going to find out. Sure would be a fun thing to do. __________________ Rebuilt 4.0 OHV with about 6000 kilometers. M90 Supercharged. Tuned by James Henson. 422 cam, dual rate springs, si valves, polished combustion chambers, Rebuilt lifters and 30 thou shaved heads. Headers, and custom exhaust. Water/meth injection. Aftermarket projector headlights w HID's. Electric fan. DELTA RV CAM FOR SALE. low miles on it.

11-25-2011, 04:57 PM	#179
Xeek Elite Explorer Virginia Beach, VA 1991 xlt Join Date: Mar 2010 Posts: 2,752 Vehicle Specs	yes, a tune. i knew i forgot something. thats how jd talked me out of it. due to first gens lack of tuning capabilities __________________ DD '94 Ranger XLT = '91 Exploder XLT = 7.3L IDI F350 Toy(sold) = OHV Overhaul = Exploder D44/8.8 SAS Project

11-25-2011, 04:59 PM	#180
jd4242 Elite Explorer va beach 92 SC Join Date: Oct 2008 Posts: 7,096 Vehicle Specs	How much is it?got a link? __________________ 92 xl 5.5"duff arms,3"BL,PJ 36x14.50,wrapped headers,side dump exhaust,.20 over,HF oil pump,422cam,45cc 95tm p+p 10.67:1 heads,p+p lower manifold,75mm TB,90mm maf,36lbs injectors,P+P GM M90 Supercharged & intercooled!!SCT tuned!!electric fan,4.88s aussie locked front & back!!next NOS&W/M http://www.explorerforum.com/forums/...=double+vision