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88RSI
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Post subject: 7AFE +20 valves Stroked & big bore (2.0 4AGE)  Posted: Tue Mar 09, 2010 9:39 pm |
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| 0.5 bar boost |
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Joined: Mon May 19, 2008 6:15 pm
Posts: 528
Location: Edenvale
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Ok so this is a little project which I have been busy with for a while now. I need to sort out my 20V rola as the engine is frot, as in uses 2-3 pints of oil per tank of fuel. Has been like this for more than 2 years after I made the mistake of running a 50/50 mix of 95 & tolls. The easiest way would be to build a motor in my spare time so I can just swop over when I am ready. So a while heard about a stroked 7AFE (1.8L) btm end that came of a turbo car that broke pistons. So I made a silly offer of R2.5k & it was accepted  The stock 7AFE has a bore of 81 & stroke of 85.5 giving it a swept volume of 1.76L. Now as far as I understand this motor was stroked using Honda rods, my guess is B18 which has a big end that is 3mm smaller than the 7AFE, & by offset grinding the 7AFE crank journal to suit the Honda rod it gave a 3mm increase in stroke, which now measures 88.5 which I have just verified. So this takes the displacement up to 1.82L  But hey why stop there, though my dealings on the forums I have managed to source myself a set of 2nd hand Nissan CA18DET 83mm pistons this gives me a final swept volume of 1.92L With the honda rods they now sit 0.5mm proud of the piston, don't they look at home   The head it self is still stock, only re conned, but its also home to a few special goodies. The first is a set of some 2nd hand billet cams with a 292 (I think) Yoshi grind with more lift. And to keep them all from jumping out a new set of TODA valve springs. If I leave the pistons 0.5mm proud & using a normal 1.2mm OEM gasket the cr works out to 12.47, if I deck the piston crowns so they are flush this takes the cr down to 11.77 with the additional benefit of making the pistons slightly lighter. Anyway this might take a while still to complete but I will keep you updated as progress is made. _________________ 
Terminator Moonsammy - a whitie with indian connections
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RSiBoy
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Post subject: Re: 7AFE +20 valves & a little bit of stroking action & big bore Posted: Wed Mar 10, 2010 7:42 am |
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| Streetracing.co.za Admin |
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Joined: Mon Mar 10, 2008 7:03 am
Posts: 5484
Location: Towing goffels since I cant remember
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mmmm this is going to be interesting Keep us posted! _________________ '05 Runx RSI - 137.5kw 177NM '89 Twincam 1600 RSI - 98.1kw 149nm Nissan 720 Kingcab 4x4 2200 - Finished and Roadworthy "Speed has never killed anyone......its suddenly becoming stationary...That's what gets you." www.jdmtuner.co.za - For all performance parts and accessories
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Fully Boosted
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Post subject: Re: 7AFE +20 valves & a little bit of stroking action & big bore Posted: Wed Mar 10, 2010 9:38 am |
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| teacher's pet |
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Joined: Thu Dec 25, 2008 9:55 pm
Posts: 247
Location: Durban
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a 2.0 4age  where is the low comp pistons, would love to boost this bitch! wes'z secrets com uit
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nadeeme
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Post subject: Re: 7AFE +20 valves & a little bit of stroking action & big bore Posted: Wed Mar 10, 2010 2:14 pm |
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| 2 Bar BOOST! |
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Joined: Wed Apr 02, 2008 8:33 am
Posts: 2535
Location: Cape Teeeeooooowwwwwn
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Lookinmg wicked boet!! But using a 20v head.. mmm those ca18 pistons look a bit too snug  Arent u worried about valve clearence? _________________ Click here to MAKE UR CAR QUICKER!
The DF20 Thread 
1976 1600s beetle ('German [ex])
1994 130 Corolla ('Ge-work [ex])
1993 180i Gsx (Ge' GZEEEEEEEE [Ex])
2003 WRX Wagon ('Ge-Stock)
1984 1.3gl Corolla ('Ge-20v)
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88RSI
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Post subject: Re: 7AFE +20 valves & a little bit of stroking action & big bore Posted: Wed Mar 10, 2010 3:20 pm |
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| 0.5 bar boost |
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Joined: Mon May 19, 2008 6:15 pm
Posts: 528
Location: Edenvale
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Still need to do the valve clearences
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Terminator Moonsammy - a whitie with indian connections
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Worx 4agte
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Post subject: Re: 7AFE +20 valves & a little bit of stroking action & big bore Posted: Wed Mar 10, 2010 4:58 pm |
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| 2 Bar BOOST! |
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Joined: Tue Apr 29, 2008 2:35 pm
Posts: 7676
Location: Building a 9s monster!!!
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as jy klaar is met die sal jy nie weet wat om te ry nie....die ding gaan fokof
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Born in the land of the rising sun!Raised on the streets of Cape Town!!
1978 COROLLA 1.6 TURBO (Full Meth)
Just because you know how it's gonna end,doesn't mean you can't enjoy the ride!!
2006 YARIS T3+ with mods!
Daily ride!!
2009 D4D 2.5T HILUX Rolling on 19's!!
IF IT FEELS LIKE YOU HAVE ENOUGH CONTROL.....YOU NOT GOING FAST ENOUGH!!BE INSPIRED
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88RSI
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Post subject: Re: 7AFE +20 valves & a little bit of stroking action & big bore Posted: Wed Mar 10, 2010 6:35 pm |
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| 0.5 bar boost |
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Joined: Mon May 19, 2008 6:15 pm
Posts: 528
Location: Edenvale
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EK hoop so boet.
My target is 150-160hp on the wheels, in its currently state it makes 109hp
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Terminator Moonsammy - a whitie with indian connections
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Worx 4agte
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Post subject: Re: 7AFE +20 valves & a little bit of stroking action & big bore Posted: Thu Mar 11, 2010 9:36 am |
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| 2 Bar BOOST! |
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Joined: Tue Apr 29, 2008 2:35 pm
Posts: 7676
Location: Building a 9s monster!!!
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i've been down this road already...but not 20v and if thats anything to go by then your power goal is touch modest!i made 145wkw with 7age 16v 
_________________
Born in the land of the rising sun!Raised on the streets of Cape Town!!
1978 COROLLA 1.6 TURBO (Full Meth)
Just because you know how it's gonna end,doesn't mean you can't enjoy the ride!!
2006 YARIS T3+ with mods!
Daily ride!!
2009 D4D 2.5T HILUX Rolling on 19's!!
IF IT FEELS LIKE YOU HAVE ENOUGH CONTROL.....YOU NOT GOING FAST ENOUGH!!BE INSPIRED
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88RSI
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Post subject: Re: 7AFE +20 valves & a little bit of stroking action & big bore Posted: Thu Mar 11, 2010 11:06 am |
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| 0.5 bar boost |
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Joined: Mon May 19, 2008 6:15 pm
Posts: 528
Location: Edenvale
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Lug is dun hierbo Anyway I like to keep my goals easily obtainable  _________________
Terminator Moonsammy - a whitie with indian connections
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Worx 4agte
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Post subject: Re: 7AFE +20 valves & a little bit of stroking action & big bore Posted: Thu Mar 11, 2010 3:08 pm |
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| 2 Bar BOOST! |
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Joined: Tue Apr 29, 2008 2:35 pm
Posts: 7676
Location: Building a 9s monster!!!
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88RSI wrote: Lug is dun hierbo Anyway I like to keep my goals easily obtainable fokkit 
_________________
Born in the land of the rising sun!Raised on the streets of Cape Town!!
1978 COROLLA 1.6 TURBO (Full Meth)
Just because you know how it's gonna end,doesn't mean you can't enjoy the ride!!
2006 YARIS T3+ with mods!
Daily ride!!
2009 D4D 2.5T HILUX Rolling on 19's!!
IF IT FEELS LIKE YOU HAVE ENOUGH CONTROL.....YOU NOT GOING FAST ENOUGH!!BE INSPIRED
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88RSI
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Post subject: Re: 7AFE +20 valves & a little bit of stroking action & big bore Posted: Thu Mar 11, 2010 10:50 pm |
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| 0.5 bar boost |
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Joined: Mon May 19, 2008 6:15 pm
Posts: 528
Location: Edenvale
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what? Did you forgot I am 1800m above sea level _________________
Terminator Moonsammy - a whitie with indian connections
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Worx 4agte
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Post subject: Re: 7AFE +20 valves & a little bit of stroking action & big bore Posted: Thu Mar 11, 2010 11:01 pm |
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| 2 Bar BOOST! |
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Joined: Tue Apr 29, 2008 2:35 pm
Posts: 7676
Location: Building a 9s monster!!!
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_________________
Born in the land of the rising sun!Raised on the streets of Cape Town!!
1978 COROLLA 1.6 TURBO (Full Meth)
Just because you know how it's gonna end,doesn't mean you can't enjoy the ride!!
2006 YARIS T3+ with mods!
Daily ride!!
2009 D4D 2.5T HILUX Rolling on 19's!!
IF IT FEELS LIKE YOU HAVE ENOUGH CONTROL.....YOU NOT GOING FAST ENOUGH!!BE INSPIRED
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88RSI
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Post subject: Re: 7AFE +20 valves & a little bit of stroking action & big bore Posted: Fri Mar 12, 2010 7:34 am |
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| 0.5 bar boost |
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Joined: Mon May 19, 2008 6:15 pm
Posts: 528
Location: Edenvale
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ja you okes are spoiled by the lekker sea air
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Terminator Moonsammy - a whitie with indian connections
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Schwitzer Turbo
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Post subject: Re: 7AFE +20 valves & a little bit of stroking action & big bore Posted: Fri Mar 12, 2010 8:44 am |
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| 2 Bar BOOST! |
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Joined: Fri Mar 07, 2008 5:17 am
Posts: 3138
Location: Brackenvango
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Worx 4agte wrote: i've been down this road already...but not 20v and if thats anything to go by then your power goal is touch modest!i made 145wkw with 7age 16v Have you already boosted this setup before? if not why not? _________________ http://www.cardomain.com/ride/2581255_____________________________________ "im in a Bucket but im Driving it like its a Benz"
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88RSI
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Post subject: Re: 7AFE +20 valves & a little bit of stroking action & big bore Posted: Fri Mar 12, 2010 7:20 pm |
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| 0.5 bar boost |
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Joined: Mon May 19, 2008 6:15 pm
Posts: 528
Location: Edenvale
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To be honnest I dont feel comfortable boosting on 83mm bores
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Terminator Moonsammy - a whitie with indian connections
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Worx 4agte
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Post subject: Re: 7AFE +20 valves & a little bit of stroking action & big bore Posted: Sat Mar 13, 2010 3:47 pm |
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| 2 Bar BOOST! |
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Joined: Tue Apr 29, 2008 2:35 pm
Posts: 7676
Location: Building a 9s monster!!!
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ja hey cylinder walls get a bit thin at those diameters....thats about the only thing that concerns me,but i will consider it for my drag car now with 100% epoxy fill in the block....i dont have a budget to blow a block at every event like the jordaans!although the results is awesome! 
_________________
Born in the land of the rising sun!Raised on the streets of Cape Town!!
1978 COROLLA 1.6 TURBO (Full Meth)
Just because you know how it's gonna end,doesn't mean you can't enjoy the ride!!
2006 YARIS T3+ with mods!
Daily ride!!
2009 D4D 2.5T HILUX Rolling on 19's!!
IF IT FEELS LIKE YOU HAVE ENOUGH CONTROL.....YOU NOT GOING FAST ENOUGH!!BE INSPIRED
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HELRAZR
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Post subject: Re: 7AFE +20 valves Stroked & big bore (2.0 4AGE) Posted: Thu Apr 22, 2010 8:45 pm |
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| teacher's pet |
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Joined: Sat May 23, 2009 6:54 pm
Posts: 186
Location: Pmb (083 448 4968)
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Looking good moons. Wat cr is good for full meth.
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88RSI
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Post subject: Re: 7AFE +20 valves Stroked & big bore (2.0 4AGE) Posted: Fri Apr 23, 2010 7:53 am |
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| 0.5 bar boost |
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Joined: Mon May 19, 2008 6:15 pm
Posts: 528
Location: Edenvale
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I dont know probably 12+?
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Terminator Moonsammy - a whitie with indian connections
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Fully Boosted
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Post subject: Re: 7AFE +20 valves Stroked & big bore (2.0 4AGE) Posted: Fri Apr 23, 2010 8:33 am |
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| teacher's pet |
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Joined: Thu Dec 25, 2008 9:55 pm
Posts: 247
Location: Durban
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how is this project progressing?
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HELRAZR
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Post subject: Re: 7AFE +20 valves Stroked & big bore (2.0 4AGE) Posted: Fri Apr 23, 2010 9:46 am |
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| teacher's pet |
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Joined: Sat May 23, 2009 6:54 pm
Posts: 186
Location: Pmb (083 448 4968)
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Help me with wat i must get i will build it
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