Anyone used these intakes before? (First TPI)
11-28-2007, 10:03 PM
#41
I remember reading about this intake way back in the day .... I didn't realize that it was still around.
I'm in the process of building a fairly healthy 383 and I was all set to buy a Miniram in the next few weeks because I didn't think I could get anywhere near enough flow out of my ACCEL base/AS&M runners/ported plenum setup.
My heads should flow in the 280 cfm range, so an out of the box FIRST system would match up with that really well, plus it's less expensive than a Miniram. I may have to give the intake choice a bunch more thought. I think I would be totally sold on this if I can get peak power in the 5500 RPM range.
I'm in the process of building a fairly healthy 383 and I was all set to buy a Miniram in the next few weeks because I didn't think I could get anywhere near enough flow out of my ACCEL base/AS&M runners/ported plenum setup.
My heads should flow in the 280 cfm range, so an out of the box FIRST system would match up with that really well, plus it's less expensive than a Miniram. I may have to give the intake choice a bunch more thought. I think I would be totally sold on this if I can get peak power in the 5500 RPM range.
11-29-2007, 03:48 AM
#42
Well I just emailed Ken at FIRST again. I'll keep everyone posted when he replies. I think there are roughly five people in so far, including myself. I asked some more questions some of the other guys asked and will keep everyone up to speed. If you want to get in on this shoot me a PM, or email me: mechguy_79@msn.com.
BTW, Ken did mention a larger discount if I got more than three buyers. I asked him about that. Would 20% make more people commit? That's $800 for the whole system, including fuel rails!
BTW, Ken did mention a larger discount if I got more than three buyers. I asked him about that. Would 20% make more people commit? That's $800 for the whole system, including fuel rails!
11-29-2007, 05:40 AM
#43
I remember reading about this intake way back in the day .... I didn't realize that it was still around.
I'm in the process of building a fairly healthy 383 and I was all set to buy a Miniram in the next few weeks because I didn't think I could get anywhere near enough flow out of my ACCEL base/AS&M runners/ported plenum setup.
My heads should flow in the 280 cfm range, so an out of the box FIRST system would match up with that really well, plus it's less expensive than a Miniram. I may have to give the intake choice a bunch more thought. I think I would be totally sold on this if I can get peak power in the 5500 RPM range.
I'm in the process of building a fairly healthy 383 and I was all set to buy a Miniram in the next few weeks because I didn't think I could get anywhere near enough flow out of my ACCEL base/AS&M runners/ported plenum setup.
My heads should flow in the 280 cfm range, so an out of the box FIRST system would match up with that really well, plus it's less expensive than a Miniram. I may have to give the intake choice a bunch more thought. I think I would be totally sold on this if I can get peak power in the 5500 RPM range.
11-29-2007, 12:16 PM
#45
If you want to get in on this shoot me a PM, or email me: mechguy_79@msn.com.
BTW, Ken did mention a larger discount if I got more than three buyers. I asked him about that. Would 20% make more people commit? That's $800 for the whole system, including fuel rails!
BTW, Ken did mention a larger discount if I got more than three buyers. I asked him about that. Would 20% make more people commit? That's $800 for the whole system, including fuel rails!
What about the throttle, TPS and MAP brackets? Are they included in the kit?
Last edited by ToniH; 11-29-2007 at 05:20 PM.
12-01-2007, 03:19 PM
#47
Does anyone know the intake base and runner lengths for the FIRST setup?
My dyno program (Engine Analyzer v. 3.3) will allow me to model different intake parameters, and I want to run some sims before I commit to the GP.
My dyno program (Engine Analyzer v. 3.3) will allow me to model different intake parameters, and I want to run some sims before I commit to the GP.
12-01-2007, 03:36 PM
#48
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cheers
shae
12-02-2007, 07:25 AM
#51
12-02-2007, 11:31 AM
#52
I was never totally sold on the Miniram in the first place. I had decided to go with it because I didn't feel I had any other choices once the SuperRam was discontinued and, TBH, I had no idea that the FIRST design was even still produced. I remember reading about it in the late 80's and I considered it when I bought my ACCEL base and AS&M runners in the mid-90's but they wanted $3000 for the system at that time.
I feel that the FIRST is a better fit to the way I want to use the car than the Miniram. This assumes I can port the FIRST enough to get my peak power around 5500 RPM.
I feel that the FIRST is a better fit to the way I want to use the car than the Miniram. This assumes I can port the FIRST enough to get my peak power around 5500 RPM.
12-02-2007, 04:06 PM
#53
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[QUOTE
I feel that the FIRST is a better fit to the way I want to use the car than the Miniram. This assumes I can port the FIRST enough to get my peak power around 5500 RPM.[/QUOTE]
yes you can port the first enough to get peak power, talk to kevin(badss) member !
thanks
I feel that the FIRST is a better fit to the way I want to use the car than the Miniram. This assumes I can port the FIRST enough to get my peak power around 5500 RPM.[/QUOTE]
yes you can port the first enough to get peak power, talk to kevin(badss) member !
thanks
12-02-2007, 04:48 PM
#54
I was never totally sold on the Miniram in the first place. I had decided to go with it because I didn't feel I had any other choices once the SuperRam was discontinued and, TBH, I had no idea that the FIRST design was even still produced. I remember reading about it in the late 80's and I considered it when I bought my ACCEL base and AS&M runners in the mid-90's but they wanted $3000 for the system at that time.
I feel that the FIRST is a better fit to the way I want to use the car than the Miniram. This assumes I can port the FIRST enough to get my peak power around 5500 RPM.
I feel that the FIRST is a better fit to the way I want to use the car than the Miniram. This assumes I can port the FIRST enough to get my peak power around 5500 RPM.
12-02-2007, 05:30 PM
#55
Well, Rick, you have the same heads I do and the rest of your combo should be similar so it will be interesting to compare the Miniram to the FIRST if either one of us ever finishes our cars. 
12-02-2007, 10:56 PM
#56
The actual straight line/shortest path measurements for the FIRST is 13.5” total intake runner length. Use that and 1.76 on the diameter with a 95% efficiency on the EA program for the FIRST (out of the box). Play around with the diameter to see how much your engine could take. It'll port out to 1.87" fairly easy,, 1.92 with effort (and at 1.9+” should up the efficiency to 100%).
12-03-2007, 06:26 AM
#57
Thanks for the info.
I did some modeling this weekend based on 1.85 diameter and 13" length and was getting peak power at 5500 and a slight roll-off at 6000-- just about where I want it to be.
I estimated the plenum volume at 160 cubic inches based on differences in size from a TPI plenum. I had previously measured the volume of my TPI plenum at 107 cubic inches. Does this seem about right?
I did some modeling this weekend based on 1.85 diameter and 13" length and was getting peak power at 5500 and a slight roll-off at 6000-- just about where I want it to be.
I estimated the plenum volume at 160 cubic inches based on differences in size from a TPI plenum. I had previously measured the volume of my TPI plenum at 107 cubic inches. Does this seem about right?
12-04-2007, 10:51 PM
#58
Thanks for the info.
I did some modeling this weekend based on 1.85 diameter and 13" length and was getting peak power at 5500 and a slight roll-off at 6000-- just about where I want it to be.
I estimated the plenum volume at 160 cubic inches based on differences in size from a TPI plenum. I had previously measured the volume of my TPI plenum at 107 cubic inches. Does this seem about right?
I did some modeling this weekend based on 1.85 diameter and 13" length and was getting peak power at 5500 and a slight roll-off at 6000-- just about where I want it to be.
I estimated the plenum volume at 160 cubic inches based on differences in size from a TPI plenum. I had previously measured the volume of my TPI plenum at 107 cubic inches. Does this seem about right?
12-05-2007, 12:29 PM
#59
I will be using AFR195 Eliminator street heads (290 CFM peak intake flow) and a Bret Bauer cam that will probably end up in the 230-ish intake duration range, so I should be able to take full advantage of what the intake has to offer. I'm no stranger to porting, so I will at least do some clean up work and port matching.
BTW, I did all the modeling with a CompCams 280XFI (230/236, .58x lift range, 113 LSA), which should be reasonably close to the actual cam. I was getting predicted volumetric efficiencies of 90% just off idle and over 100% from 3500-6000 RPM, so I feel I've got the combo pretty much nailed.
BTW, I did all the modeling with a CompCams 280XFI (230/236, .58x lift range, 113 LSA), which should be reasonably close to the actual cam. I was getting predicted volumetric efficiencies of 90% just off idle and over 100% from 3500-6000 RPM, so I feel I've got the combo pretty much nailed.
Last edited by Z51L9889; 12-05-2007 at 12:34 PM.
