iv had my blacktop levin bzg for quite some time now and looking to increase its power. I was just wanting to know if i could grab a manifold and supercharger off a 4agze and wack it on my 20v along with what ever else is needed.
i've heard of it on a silvertop so i dont see why it wouldnt work on a blacktop. but ya you'd need to get rid of the itb's, and you should probably swap the internals out for something stronger (possibly silvertop or gze rods if they fit? with some forged low comp pistons), as i'm not sure the blacktop rods and higher comp. will handle the boost well.
whats this itb's?? wouldnt my pistons be strong enough?? cauz they come out with forged pistons factory?? can you stick intercoolers on superchargers im really dont know much about superchargin lol.
They are factory forged but the blacktop's compression rate is higher than the silvertop, so running boost will put more pressure on the rods. ITB's, are individual throttle bodies, i dont see why you cant use them, youll just have to make an air tight seal to run the boost threw to all of them equally. my 0.02c
Im thinking of putting a s/charger on my silvertop as well. but im not sure what the situation is with running boost through an AFM.
ok cheers for the feedback..im gonna get some parts and take it into a performace shop and see what they can do.. ill get back to you with feedback on how it went
That is a picture of ITB's. There Inidivual Throttle Bodies, and I have never head of anyone running boost through them. Here is another picture of some ITB's,
I'd go with the supercharger ITB's need a lot of tuning
__________________
89 Corolla All-Trac Sedan White 188,xxx (Sold)
89 Corolla All-Trac Wagon Blue 172,xxx (Current)
That is a picture of ITB's. There Inidivual Throttle Bodies, and I have never head of anyone running boost through them
all of the 20V 4age's have itb's from the factory. there are plenty of 20valve turbo's running their boost through the factory itb's. Your pictures are all of individual throttles using velocity stacks instead of a plenum.
Quote:
They are factory forged but the blacktop's compression rate is higher than the silvertop, so running boost will put more pressure on the rods.
your right...since the blacktop uses lighter/weaker rods for better rev-ability you should use a gze or silvertop rod too.
Quote:
i dont see why you cant use them, youll just have to make an air tight seal to run the boost threw to all of them equally
when i saw this discussed on another forum, can't remember which one? they said the sc12 (supercharger on the 4agze) won't bolt onto the 20V throttles, as it uses the 4agze intake manifold as a mount. Maybe you could fab up some custom brackets and intake (20V oem plenums will only handle around 5-6 psi). So in order to use the 4agze sc12 you'd need to get rid of the individual throttles and replace it with the intake manifold from the gze, with the single throttle. you'd also need the 4agze injectors. somebody correct me if i'm wrong though?
Quote:
can you stick intercoolers on superchargers im really dont know much about superchargin lol.
ya you can put an intercooler after the supercharger/before the throttle to cool the intake charge as the boosted air will be much hotter. all the 4agze's are intercooled from the factory. look at a picture of one, it's on the top of the valve cover.
to be honest this seems like alot of work, and the engine would benefit much more from a turbo set up...
Stock 20V plenum apparently doesn't handle boost of more than 3-4 PSI. Also, the velocity stacks on the stock 20Vs are /weird/, and there may not be an off-the-shelf unit that's strong enough to stand up to pressurization. Check TWM Induction, they have something, but comparisons would have to be made against the size of the openings and the size of the stacks.
when i saw this discussed on another forum, can't remember which one? they said the sc12 (supercharger on the 4agze) won't bolt onto the 20V throttles, as it uses the 4agze intake manifold as a mount.
You can run the charger with the TB's but not in the factory mounting point. Use custom brackets to put it where it will fit.
Quote:
Originally Posted by EverAE
So in order to use the 4agze sc12 you'd need to get rid of the individual throttles and replace it with the intake manifold from the gze, with the single throttle. you'd also need the 4agze injectors. somebody correct me if i'm wrong though
You can not put the manifold off a GZE onto a 20v, the heads are different.
How would you use 4agze injectors? with a 20v ECU you need 20v injectors. If you going to stand alone, you can put what ever injectors you want in.
Quote:
Originally Posted by EverAE
Maybe you could fab up some custom brackets and intake (20V oem plenums will only handle around 5-6 psi).
This is true, you would need a custom airbox. (its an airbox not plenum, a plenum comes after the throttle)
Quote:
Originally Posted by EverAE
to be honest this seems like alot of work, and the engine would benefit much more from a turbo set up...
x 10, same effort to do both setups (lots) turbo will give much better results.
jeffnz: Are you planning on doing this work yourself? Because I think you've under estimate the complexity/expense of this sort of project. If you're planning on having a shop do it, then I hope your bank balence is healthy.
There are a few 20v S/C setups running around in NZ, I know of one useing stock internals 10.5:1 compression. Makes somewhere around 145 rw kw.
__________________
Say no to huge pics as signatures.
Wanna bring back this thread for the benifit for all who want to turbo a 20V...
ive heard that GZE rods and silvertop rods are the same, are they?...and if so...can i use the GZE pistons in a silvertop, to possibly lower the compression to run higher boost?.
Is it better? or will it be easier OR cheeper to just boost the 10.5.1 ratio silvertop?
before anybody jumps me here i'm going from heresay....s/c on the 20v will require swapping over the water pump, not a big problem but easily overlooked. and i can't see why the 20v ecu can't run the GZE injectors as long as they are same impedance. And i'm not familiar with the sizes but if the GZE is bigger CC then at least on a silverotp you could try to trick the ecu with bigger afm. I would imagine the blacktop can probably read low boost and compensate
And using an AFM is fine, it goes before the s/c or turbo. whether or not ecu will compensate is a different story.
__________________
1990 Geo Prizm with Silvertop 20V swap
Toyota Tech
The AutoGuide.com network consists of the largest network of enthusiast-owned enthusiast-operated automotive communities.
AutoGuide.com provides the latest car reviews, auto show coverage, new car prices, and automotive news. The AutoGuide network operates more than 100 automotive forums where our users consult peers for shopping information and advice, and share opinions as a community.
ToyotaNation.com is an independent Toyota/Lexus enthusiast website. ToyotaNation.com is not sponsored by or in any way affiliated with Toyota Motor Sales, USA, Inc. The Toyota, Lexus and Scion names and logos are trademarks owned by Toyota Motor Sales, USA, Inc.
20v upgrade
thanks punter
Linear Mode
