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 Post subject: Re: My E85 1150
 Post Posted: Wed Feb 02, 2011 9:03 pm 
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Don't confuse Holley and BLP jet sizes. My gas 1250 runs 128 BLP jets, about 100 in a Holley jet. The BLP jets are actual hole sizes. So running 140's isn't a lot more fuel on an 1150. Considering a methanol Dominator would probably need around .200 or more, not too far off. I'll go up to about .170, if still not enough I'll try different blocks.


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 Post subject: Re: My E85 1150
 Post Posted: Wed Feb 02, 2011 11:24 pm 
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jmarkaudio wrote:
Don't confuse Holley and BLP jet sizes. My gas 1250 runs 128 BLP jets, about 100 in a Holley jet. The BLP jets are actual hole sizes. So running 140's isn't a lot more fuel on an 1150. Considering a methanol Dominator would probably need around .200 or more, not too far off. I'll go up to about .170, if still not enough I'll try different blocks.


FYI .200 is/was still lean on my methanol 1150! The cross wells in those Holley metering blocks on that carb are .206 and the stake tubes are .213.

gdmii had a Rupert 1150 that came with the 750 flair boosters in it. I ran that thing for a couple of weeks and it had .195 jets in it and it was a 3 circuit carb and was pig rich at part throttle.

Oh and JMark, when you go to BLP tomorrow check to see if they can get me a pair of Holley 11862 metering blocks. I think the Holley part number is 34R11910A.

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 Post subject: Re: My E85 1150
 Post Posted: Thu Feb 03, 2011 12:04 am 
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What are the metering blocks for? If for a gas 2 circuit, the 2 e-bleed blocks I get are 11180 3.


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 Post subject: Re: My E85 1150
 Post Posted: Thu Feb 03, 2011 8:14 am 
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Think those actually came on a 750 methanol carb originally. Need these instead of billet because I'm going to cut the crap out of them and I can't treat aluminum to keep it from corroding.


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 Post subject: Re: My E85 1150
 Post Posted: Thu Feb 03, 2011 8:38 am 
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Thanks Mark. Yes, I was aware of the Holley vs BLP number differences. My only point was that the 140 range your in now should be very comparable to the 104-106 Holley range that Mark and Eric seem to use. I know every combo's different, so I guess we'll see were you end up with yours.

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 Post subject: Re: My E85 1150
 Post Posted: Thu Feb 03, 2011 4:19 pm 
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jmarkaudio If you have to use a jet anywhere near a 170, now the bottom of the main well is the restriction. I dont think you need a jet that big, what size is your motor and how much HP does it make. The blocks you used should have more than enough capasity for e85, maybe with a little larger main well at least at the bottom. It may be worth a try before you try another set of blocks.


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 Post subject: Re: My E85 1150
 Post Posted: Thu Feb 03, 2011 5:59 pm 
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I understand the restriction at the bottom of the mainwell. I picked up .150-.165 jets today with that in mind, and some .170 for the methanol blocks in case. I don't expect to need that much, just planning ahead. I have talked with Mark on occasion, most of his builds are 1050 or less. An 1150 takes 3-5 higher Holley jets for gas, which is around .008+-. Multiply times 1.5 more for E85... I should have figured larger to start.


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 Post subject: Re: My E85 1150
 Post Posted: Sat Feb 12, 2011 1:41 pm 
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Hallelujia!!!! \:D/ We have some data. And boy did it like the jets, and still looks lean. The run was made on the throttle stop, with the last settings I had from the Reynolds Divisional in October. I ran an 8.66, a couple of other changes that may have helped a little, shorter tires and higher launch RPM, but still more MPH on the stop the I was getting without one before on E85.

1.195
3.622
5.576
127.01
7.245
8.661
158.81


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 Post subject: Re: My E85 1150
 Post Posted: Sat Feb 12, 2011 2:10 pm 
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That graph is hard to read? So what was the AFR down track in high gear? :-k

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 Post subject: Re: My E85 1150
 Post Posted: Sat Feb 12, 2011 2:37 pm 
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Stays in the mid .9 range. Vacuum is .6". I went Thursday to test... rained all day. ](*,) This was my one and only time run, I had to work yesterday and am now at work in Tampa. My next change will be to try the methanol blocks, but will be after this race.



The guy I ran for time runs ran 192 MPH... Then just wrecked his S/G car.


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 Post subject: Re: My E85 1150
 Post Posted: Sat Feb 12, 2011 2:56 pm 
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jmarkaudio wrote:
Stays in the mid .9 range. Vacuum is .6". My next change will be to try the methanol blocks, but will be after this race.


If that's on a lambda scale isn't that suppose to be down around .82 or so?? :-k

RE: methanol blocks? Are those BLP billet and if so. what is the diameter of the crosswell? I'm looking for a way out of buying the OEM Holley blocks. AND, if you go to the methanol blocks, aren't you going to have to do something different with banjos since the holes in the gas ones are like .172 ID? :-k

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 Post subject: Re: My E85 1150
 Post Posted: Sat Feb 12, 2011 3:06 pm 
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Lambda and yes, looks lean. The methanol blocks I have are from a 970 4150 RS Demon I have, mainwells and cross channels are just over .190. My booster pins are .181, my banjo's are .185. I have .164 square jets in it at the moment. I'm going to try the blocks with no other mods with the .170 jets I have, just to see a response. I'll modify the other blocks or use them on a smaller carb, maybe on a 1050. Running almost 159 on the stop is better than the few WOT runs I've made, so I know I'm going the right way.


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 Post subject: Re: My E85 1150
 Post Posted: Sat Feb 12, 2011 3:17 pm 
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That's good news Mark. Glad to see you moving in the right direction but I'm now wondering if I should be using my 1050 main body instead of the 1150 for the E85 conversion. The only thing I don't like about 1050 body is that the transfer slot position is too low on the primary side and even with the screws backed off I end up with .030 to .040 exposed.

The other option I thought about was sticking with the 1150 main body but adding some banjo's with a small step, maybe some .920 or .930's to trick it into thinking it's really a 1050.

Any idea's what effect I should expect by adding a small stepped booster?

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 Post subject: Re: My E85 1150
 Post Posted: Sat Feb 12, 2011 3:30 pm 
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I'm not Mark but I can tell you that the stepped booster will generate more signal along with reducing air flow by XX amount.

My suggestion would be to run it like it is first just to get a baseline to work from as Mark's engine/carb isn't your engine/carb and what doesn't work for him, just might work for you. You need to know where you are in order to figure out what's needed to get you where you want to be. ;-)

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 Post subject: Re: My E85 1150
 Post Posted: Sat Feb 12, 2011 3:38 pm 
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The small step would help, I went with the 1150 as I had a pair I got cheap. One on gas and one on E85 to compare once I get it where i want it. As far as yours, what is it going on? If I was building it for just my 427 I may have gone with a 1050, however I hope to try it on my brother's 447 SB2 and maybe on my 461 SB2 as well.


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