why not a Supercharged EFI 7 port?
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| SUPER CHARGE OR 7 PORT HEAD https://www.ausmini.com/forums/viewtopic.php?f=5&t=69182 |
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| Author: | jcg2 [ Wed Mar 02, 2011 7:39 pm ] |
| Post subject: | SUPER CHARGE OR 7 PORT HEAD |
So looking at doing some serious go go on my round nose. I have a 1275 bored to 1330 with a 40mm webber goes great but i would love some more power. So im either looking at sc12 charger kit or the 7 port alloy head with twin 40mm webber what do you guys think?? im thinking cost factor they will both be similar price, What sort of power should i be expecting from each, does anyone know?? http://cgi.ebay.com/ebaymotors/Crossflo ... ccessories |
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| Author: | awdmoke [ Wed Mar 02, 2011 11:22 pm ] |
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Cost will depend on your current engine - what is your current compression ratio, or are you planning on a rebuild and new pistons anyway? Also is it for mostly street or track? |
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| Author: | jcg2 [ Thu Mar 03, 2011 7:22 am ] |
| Post subject: | Charge |
Will be mainly street .. My engine has been rebuild not long ago so don't plan on doing that again. |
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| Author: | Hanra [ Thu Mar 03, 2011 11:56 am ] |
| Post subject: | |
I had a thought about putting a SC on my car but I mean in reality it would be a $10k project by the end of it. Rebuilding motor/box/diff to handle extra torque and then buying the SC kit and a SC12... So expensive.... $10k would build one hell of a SBC. |
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| Author: | Super-mini [ Thu Mar 03, 2011 12:31 pm ] |
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i vote for sc-12, because i have one and bang for buck it cant be beat. |
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| Author: | awdmoke [ Thu Mar 03, 2011 1:35 pm ] |
| Post subject: | |
I went for an alloy 7 port head, as I already had a high compression stroker bottom end & changing pistons to reduce the CR was out of my budget. |
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| Author: | mattsmadmini [ Thu Mar 03, 2011 2:09 pm ] |
| Post subject: | |
why not a Supercharged EFI 7 port?
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| Author: | Hanra [ Thu Mar 03, 2011 2:10 pm ] |
| Post subject: | |
What is the price of the SC12 kit nowdays? Is there more then one type available? Are the kits still available new? |
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| Author: | Super-mini [ Thu Mar 03, 2011 2:12 pm ] |
| Post subject: | |
just so you know, you can run low boost with standard compression also, a decompression plate is pretty cheap, under $100 i think. havent had any issues with mine, and its been running max boost etc. also means you can return the engine to n/a if you wish. its not the best way, but if you're on a budget or your engine is already built... think they go for around $1200 with the charger, and a carb if you're lucky. i was lucky and had a hs6 off a wreck, and sourced a sc-12 cheaply. i'd estimate 80-90hp at the wheels based upon what i have seen other 1275's do. we were lucky and had 3 sc-12 supercharged bigblock's on the same dyno same day. |
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| Author: | jcg2 [ Thu Mar 03, 2011 5:28 pm ] |
| Post subject: | alloy head |
think i might go for the alloy 7 port head guys.. Next question is how much more power will i gain with this engine from an already mild set up i have as a 1330. i have a very mild cam and some very mild head work already. |
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| Author: | Lillee [ Thu Mar 03, 2011 6:50 pm ] |
| Post subject: | |
You won't gain much with just a "mild" cam. Change the cam too |
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| Author: | SuperCooper [ Thu Mar 03, 2011 9:29 pm ] |
| Post subject: | |
FYI: http://www.ausmini.com/forums/viewtopic ... &start=150 "Ok , so had the 7 port on the rolling road dyno today. 5 port head A+ 1360, 266 cam , 1.5 rrr, LCB , 45mm weber, standard 5 port head made 60hp atw @ 5750rpm, 3rd gear 110 kph. Ported 7 port Pierce head Same dyno, same set up with twin 40mm dellortos. 10.5 cr. 3.1 diff. 90.4 hp atw @ 5870, 3rd gear ,118kph. Still a bug to iron out around 3000 - 3500 rpm. Needs : new exhaust - perry lcb has seen better days and is cracked! I noticed this the night before the dyno session , so disconected battery + and - , welded up the cracks and sorted the lower bracket and fried the alternator in the process. My advice - unplug your alt when welding! Megajolt lite or a different dizzy - the A+ ducellier was not made for this application. Pretty happy so far with a bit more to come , need to sort out the miss in middle revs to make it more driveable , probably a combination of advance curve/jetting. Anyone else got thiers going?" |
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