Stage3, cams and e85
#26
Both are Roots-type superchargers using the latest Eaton TVS ™ rotating assembly.
https://www.harrop.com.au/shop/htv13...er?search=1320
https://www.harrop.com.au/shop/htv1900-supercharger
https://www.harrop.com.au/shop/htv13...er?search=1320
https://www.harrop.com.au/shop/htv1900-supercharger
#29
Senior Member
iTrader: (6)
Comparing boost levels on blowers is pointless, just like comparing boost levels on a turbo.
There are a lot of things to consider, and I'm not the knowledgeable in superchargers just that you can't compare boost levels to thing power.
There are a lot of things to consider, and I'm not the knowledgeable in superchargers just that you can't compare boost levels to thing power.
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Staged07SS (06-26-2017)
#30
If it were linear and you put X amount of air that contains X heat in half the space you double the temp. It doesn't matter what you use to do it with. The BTU's remain the same but the temp doubles.
#34
The efficiency I see since both share the same technology is one doesn't have to be spun as fast and is also capable of moving more mass overall at its peak RPM. A 1900 has more physical mass therefore will be able to dissipate more heat at the same temp. At the same boost pressure each will have their lower housings subjected to the same temps.
My experience with the Balt in Denver I see with the 1900 has a much larger pulley than it did with the M62. It can move more mass and create more boost at a lower RPM. To handle the heat increase it has an oversize ZZP Heat Exchanger and secondary ZZP heat exchanger plus dual pass.
My experience with the Balt in Denver I see with the 1900 has a much larger pulley than it did with the M62. It can move more mass and create more boost at a lower RPM. To handle the heat increase it has an oversize ZZP Heat Exchanger and secondary ZZP heat exchanger plus dual pass.
#37
The thing about the 1900 is with how small our engines are, even a large pulley yields a very high PR. This puts you way off of the efficiency map. If you could get the boost down to a reasonable level while still spinning a decent blower rpm, thats where it will be most efficient. By adding an even larger pulley you arent helping much. PR and blower speed together are what affect the efficiency, not just simply "getting the boost down"
#38
New Member
Thread Starter
Went back to dyno yesterday. They were doing a 2 runs for $40 special. I put my adjustable tensioner on the tightest setting and it seemed to take care of my boost problems. It held 13psi till 7500rpm with max boost of 13.76
Ended up with 270hp 235 tq
Clutch, 17 in drag radials and 3in catback soon to come! Oh yeah I forgot to mention the car has 190k miles on stock longblock, tranny and clutch.
Ended up with 270hp 235 tq
Clutch, 17 in drag radials and 3in catback soon to come! Oh yeah I forgot to mention the car has 190k miles on stock longblock, tranny and clutch.
#40
New Member
Thread Starter
I plan on going with a tvs in the fall or spring and don't want to be limited if I go with 2.5 exhaust. Should I stick with stock catback until I install the tvs? I want to get exhaust work done before I go with the bigger blower, but I just don't want it to hurt my power until then.
#42
Went back to dyno yesterday. They were doing a 2 runs for $40 special. I put my adjustable tensioner on the tightest setting and it seemed to take care of my boost problems. It held 13psi till 7500rpm with max boost of 13.76
Ended up with 270hp 235 tq
Clutch, 17 in drag radials and 3in catback soon to come! Oh yeah I forgot to mention the car has 190k miles on stock longblock, tranny and clutch.
Ended up with 270hp 235 tq
Clutch, 17 in drag radials and 3in catback soon to come! Oh yeah I forgot to mention the car has 190k miles on stock longblock, tranny and clutch.
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moparbishi (07-10-2017)
#43
New Member
Thread Starter
#47
Senior Member
iTrader: (1)
Although a 3" exhaust may not be advantageous in this situation I don't really see a disadvantage. The price difference is minimal. Really the only argument against 3" exhaust is that it is louder but if you get ZZP's with cat, resonator and muffler I think it sounds really good. If you have an existing 2.5" exhaust system and are deciding whether to keep it or upgrade that is one thing but if you are getting a new exhaust system either way I can't find many reasons to not just go with the 3".
#50
New Member
Thread Starter
I screwed up when I ordered my header and got a midleghth. At the time I thought I was going to go m62/nitrous and wanted low end power, but a tvs sounds like a better idea. My downpipe flange on the mildlength header is 2.5, so im going to have to weld on a 3in flange for the 3in catback. Yeah I know that might sound silly, but I can always switch to a longtube down the road.