| Author | Topic |
|---|
Registered:
May 2002
|
|
Can I Turbo a 20valve
|
Tue, 30 September 2003 10:36
|
 |
Hi All,
Just wondering if anybody's knows if you can put a turbo on a 20v.
If it can be done and you have any info that can help can you please forward it onto me.
Cheers
Will
|
|
|
Location:
Sydney
Registered:
February 2003
|
|
Re: Can I Turbo a 20valve
|
Tue, 30 September 2003 10:45
|
|
Will,
It has been done, a club member down Oak Flats way put one in his Lotus 7 replica.
He has now gone to an new NA motor and I believe has the conversion bits for sale, follow the link below.
http://www.clubmandrivers.com/exchange_and_mart.ht m
|
|
|
Location:
geelong
Registered:
September 2003
|
|
Re: Can I Turbo a 20valve
|
Tue, 30 September 2003 19:07
|
|
yes, anything can be turbo'd. but at what cost. aparently, from reading bill sherwoods page, the 20v head will bolt onto the 4agze's bottom end. but then the vvt is disabled. im unsure as to wether or not it could be modded to work. to keep the vvt you would have to use the standard block and use blower pistons, i dont know if the ones from a 4agze would be a straight bolt in, or you could buy after market or custom jobs from the likes of aries pistons etc...
for turbo manifolds, just do a web search 4age turbo manifold, you get the picture.
if your a road racer, i'd go the 20v with a medium turbo, and pistons, but if you like drags more, go the 4agze route, check out ?4agze gearbox handle 350hp? toyboy. 
[Updated on: Wed, 01 October 2003 18:02]
|
|
|
Location:
geelong
Registered:
September 2003
|
|
|
Location:
Parramatta
Registered:
July 2002
|
|
Re: Can I Turbo a 20valve
|
Wed, 01 October 2003 22:49
|
|
|
if u use the 20v head and ze pistons the motor will no longer be a 20v but a 16v.... LOL the pistions have a specail cut out for the 5th valve each cyl.
|
|
|
Location:
Canberra
Registered:
May 2002
|
|
Re: Can I Turbo a 20valve
|
Thu, 02 October 2003 03:20
|
|
| Quote: |
if u use the 20v head and ze pistons the motor will no longer be a 20v but a 16v.... LOL the pistions have a specail cut out for the 5th valve each cyl.
|
bugger. I thought this might be the case. Looks like I'll be porting the 16V head after all.
|
|
|
Location:
Sydney
Registered:
May 2002
|
|
Re: Can I Turbo a 20valve
|
Thu, 02 October 2003 03:59
|
|
|
the ZE pistons are dished... arent they? they dont have valve cutouts.
|
|
|
Location:
Canberra
Registered:
May 2002
|
|
Re: Can I Turbo a 20valve
|
Thu, 02 October 2003 04:08
|
|
|
Mine are 8.9:1 compression (MAP sensor GZE) pistons, they are slightly dished, but still have small valve reliefs.
|
|
|
Location:
Syndey
Registered:
December 2002
|
|
Re: Can I Turbo a 20valve
|
Thu, 02 October 2003 04:25
|
|
Samantha Rigoli's corolla was a turbo 20v, used make around 500hp at the wheels, and was a daily driver with the boost down
i say do it they work a treat!!
Dale
|
|
|
Location:
sunny coast, qld
Registered:
October 2002
|
|
Re: Can I Turbo a 20valve
|
Thu, 02 October 2003 06:00
|
|
|
that was a 4agze block on the rigoli car.
|
|
|
Location:
Canberra
Registered:
May 2002
|
|
Re: Can I Turbo a 20valve
|
Thu, 02 October 2003 06:37
|
|
|
Yep. Definately no 10.5:1 pistons in the Rigoli car! Its not a good recipe unless you plan to run ELF fuel or equivalent.
|
|
|
Location:
geelong
Registered:
September 2003
|
|
Re: Can I Turbo a 20valve
|
Tue, 07 October 2003 12:28
|
|
 yes, the pistons do have valve reliefs cut into them, but why?
remember, this is a non interference head, so the cutouts only come into use when you break the cam timing belt, so that the pistons dont bend the valves when the timing is out of whack, but when the timing is normal you won't have a problem if im not mistaken. if i am mistaken  , somebody please reply.
using these pistons should only damadge the valves if the timing belt should break.
thanx, toyboy.
|
|
|
Location:
geelong
Registered:
September 2003
|
|
Re: Can I Turbo a 20valve
|
Tue, 07 October 2003 12:39
|
|
 just thinking about how to retain the quad throttle bodies of the 20v engine while running a turbo. anyone done this or know where to get a plenum / how to manufactue one etc... toyboy. 
|
|
|
