Mancini Racing ARCA W2 engine ** UPDATE**
#632161
03/06/10 02:13 PM
03/06/10 02:13 PM
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Joined: Feb 2005
Posts: 699 Manassas, VA USA
Scamp451
OP
mopar
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OP
mopar
Joined: Feb 2005
Posts: 699
Manassas, VA USA
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Finally got the motor on the Dyno yesterday. Very pleased with the results considering what this in this old dinosaur. The limiting factors that Brett stated are what limited the power/tq. The pulls were done on VP 110 but will run E85 when it gets in the car. I also did not have the 2" spacer he suggested, and the headers were borrowed (last minute) and had mufflers in the collectors which robbed some as well. Brett has the Dyno sheets scanned, any guesses on what it made? Here is a quick rundown. If I missed anything I am sure he will clarify even though he hates to type: X block- 4.060 bore, 3.454 stroke No flow data on the heads or intake... see earlier in the post for info on them https://board.moparts.org/ubbthreads/show...part=1&vc=11.5 steel rockers Predator cam 266 in/272 ex @ 050 .430 lobe lift Lobe sep. 104 in/112 ex Gross 645 in/653 ex Cam was degreed in at 104 Gutted lean burn dist w/ a crank trigger 1-5/8-1-3/4 stepped sprint car headers Timing was happiest at 38° We tried his Pro Systems Dom as well as my out of the box 1050 which were only a few HP between the two.Mine liked 88-90 jets, and has power valves in thre front and rear. The rotating assembly is anything but light, but this is going to be a bracket motor and not out to bend the needle. Oil pressure was through the roof with nothing done to the pump (M72HV). Nothing fancy in the motor, especially by todays standards. Sorry, no prize for hitting the number, just bragging rights.
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Re: Mancini Racing ARCA W2 engine ** UPDATE**
[Re: Scamp451]
#632163
03/06/10 04:36 PM
03/06/10 04:36 PM
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Joined: Jun 2003
Posts: 52,972 Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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535 hp at about 7200... did you change anything in it or is that the way you bought it... if I remember right you got that pretty cheap so you should be pretty happy either way
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Re: Mancini Racing ARCA W2 engine ** UPDATE**
[Re: MR_P_BODY]
#632164
03/06/10 05:38 PM
03/06/10 05:38 PM
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Joined: Nov 2003
Posts: 6,293 Rock Springs
Bob_Coomer
master
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master
Joined: Nov 2003
Posts: 6,293
Rock Springs
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I didnt see the compression of the engine, but the other thread showed a dome on the pistons...So I will assume at least in the 12.5-13:1 range? Hmm... 568hp and I figure 1.38 Lbs/torque per inch so 490ish for torque.
[color:"red"]65 Hemi Belvedere coming soon [/color] [color:"#00FF00"]557" Indy engine 1.07 60ft 144mph in the 8th 2100 lbs package [/color]
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Re: Mancini Racing ARCA W2 engine ** UPDATE**
[Re: Bob_Coomer]
#632165
03/06/10 06:53 PM
03/06/10 06:53 PM
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Joined: Feb 2004
Posts: 6,257 acworth / N. georgia - south e...
cheapstreetdustr
master
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master
Joined: Feb 2004
Posts: 6,257
acworth / N. georgia - south e...
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if it does run that kind of compression.. and the cam lift i am seeing.. i am thinking the torque should be pretty good even with only 3.4 stroke. so my guess.. 588hp 442 trq. with the smaller carb. i bet it sounds nasty.!! cheapst.
365" Iron J heads,,3480lbs best 1.39 60ft on SS springs.10.54,124 mph ...6.67 1/8th et.average 60fts 1.46 w/ small cam &.063 no2 pill tagged & insured [image][/image]
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Re: Mancini Racing ARCA W2 engine ** UPDATE**
[Re: W5DART66]
#632171
03/07/10 06:55 AM
03/07/10 06:55 AM
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Joined: Jan 2003
Posts: 32,394
Quicktree
I Win
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I Win
Joined: Jan 2003
Posts: 32,394
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Quote:
Oh BTW dont look at fuel #s the $5.00 distributor and the 15year old wire set was messing up the dynos data acquisition for fuel readings.(To much EMI)
I was just about to say 42.2 looks just a little rich
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Re: Mancini Racing ARCA W2 engine ** UPDATE**
[Re: W5DART66]
#632172
03/07/10 08:55 AM
03/07/10 08:55 AM
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Joined: Oct 2004
Posts: 1,327 south central,Pa
mopar_to_ya
pro stock
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pro stock
Joined: Oct 2004
Posts: 1,327
south central,Pa
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Hey Brett, Did you try the Addative on this engine dyno session? We did a Dyno-Demo this week with a 900hp turbo dsl tractor pull engine, and picked up 6HP and 9.5FtLbs of torque with a 15oz bottle, and it raised the torqe throuhout the higher RPM range too. Oh, and they were really happy with the oil temp drop, and are hoping to get more passes per oil change, which they change every 3 runs now. good numbers take care
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Re: Mancini Racing ARCA W2 engine ** UPDATE**
[Re: Scamp451]
#632173
03/07/10 08:57 AM
03/07/10 08:57 AM
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Joined: Oct 2004
Posts: 1,327 south central,Pa
mopar_to_ya
pro stock
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pro stock
Joined: Oct 2004
Posts: 1,327
south central,Pa
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Brian, Glad to see you got her together, and with GOOD numbers to boot. You gonna' get her in and run it this year. I'll be you are itching to race again,lol. Take care Ronnie
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Re: Mancini Racing ARCA W2 engine ** UPDATE**
[Re: mopar_to_ya]
#632174
03/07/10 09:27 AM
03/07/10 09:27 AM
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Joined: Jan 2003
Posts: 1,784 PA
W5DART66
top fuel
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top fuel
Joined: Jan 2003
Posts: 1,784
PA
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Quote:
Hey Brett, Did you try the Additive on this engine dyno session? We did a Dyno-Demo this week with a 900hp turbo dsl tractor pull engine, and picked up 6HP and 9.5FtLbs of torque with a 15oz bottle, and it raised the torque throughout the higher RPM range too. Oh, and they were really happy with the oil temp drop, and are hoping to get more passes per oil change, which they change every 3 runs now.
good numbers take care
Sorry I did not get to try it I forgot it at home kind of upset me but we had a LONG day started off bad the night before and just got worse for most of the next day but in the end 560HP for $4000.00 total is good in IMHO. I will be putting one of my W8 engines on the dyno soon I will give it a shot in that.
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Re: Mancini Racing ARCA W2 engine ** UPDATE**
[Re: mopar_to_ya]
#632176
03/07/10 10:31 AM
03/07/10 10:31 AM
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Joined: Feb 2005
Posts: 699 Manassas, VA USA
Scamp451
OP
mopar
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OP
mopar
Joined: Feb 2005
Posts: 699
Manassas, VA USA
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Quote:
Brian, Glad to see you got her together, and with GOOD numbers to boot. You gonna' get her in and run it this year. I'll be you are itching to race again,lol. Take care Ronnie
If this year, not until later in the year. BTW the oil pan sealed up like a charm. I gave Brett 2 pans, he use the Charlie's over the Milodon since you don't have to use those pesky rubber seals in front and back.
Need to get digging into this W8 motor at some point. Brett got some flow data on them last week, so I am a bit gitty about that one.
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