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Turbo Blocks

 
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blogsy




Joined: 16 Jun 2012
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PostPosted: Mon Jul 31, 2017 5:45 pm    Post subject: Turbo Blocks Reply with quote Reply with quote including images

Got the chance to buy a rev5 turbo block and head with the strengthened water pump area. I'm just not sure that I'll be able to tell if it's a rev3 or rev5 by looking at that. any other ways to tell the difference, or has anyone got a picture of the rev3 pump area and the rev5 stronger pump area. Really would appreciate any help.
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androo007
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Joined: 03 Mar 2014
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1994 Toyota MR2 Mk2 Turbo Rev3

PostPosted: Tue Aug 01, 2017 6:27 pm    Post subject: Reply with quote Reply with quote including images

Check out my build thread. I have a REV 5 NA block with the stronger waterpump area.
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blogsy




Joined: 16 Jun 2012
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PostPosted: Tue Aug 01, 2017 7:02 pm    Post subject: Reply with quote Reply with quote including images

Excellent, thanks Andrew just what I need. Why is the rev 5 N/A block going to be better than a rev 5 turbo block? [thumleft]
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Dale_V




Joined: 14 Dec 2004
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PostPosted: Wed Aug 02, 2017 6:09 am    Post subject: Reply with quote Reply with quote including images

blogsy wrote:
Why is the rev 5 N/A block going to be better than a rev 5 turbo block? [thumleft]


They're not better (or inferior), they're just easier to source than a rev5 turbo block.
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Ja99a




Joined: 03 Jan 2005
Posts: 878
Location: Bright Baginton
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1992 Toyota MR2 Mk2 Turbo Rev2

PostPosted: Sat Aug 19, 2017 10:11 am    Post subject: Reply with quote Reply with quote including images

What happens to the water pump area of the block?

why does it matter?

im curious?
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rev2rich
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Joined: 17 Dec 2009
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1991 Toyota MR2 Mk2 Turbo Rev2

PostPosted: Sat Aug 19, 2017 11:33 am    Post subject: Reply with quote Reply with quote including images

Weakest point of the block and prone to crack [thumleft]
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blogsy




Joined: 16 Jun 2012
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PostPosted: Sat Aug 19, 2017 1:13 pm    Post subject: Reply with quote Reply with quote including images

Turned out not to be the stronger block. Would not have known if not for that advice about the squared off edge by the water pump, so thanks again. I'v been told that a week point is between cylinders 2 and 3.
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Gazza_DJ
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Joined: 29 Nov 2010
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1997 Toyota MR2 Mk2 NA Rev4

PostPosted: Mon Aug 21, 2017 1:01 pm    Post subject: Reply with quote Reply with quote including images

blogsy wrote:
Turned out not to be the stronger block. Would not have known if not for that advice about the squared off edge by the water pump, so thanks again. I'v been told that a week point is between cylinders 2 and 3.


A late 5S block addresses both of those issues.
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androo007
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1994 Toyota MR2 Mk2 Turbo Rev3

PostPosted: Mon Aug 21, 2017 9:10 pm    Post subject: Reply with quote Reply with quote including images

2/3 weak spot tends to be the rev 3s as they had the poorest casting.

Once you hit 450-500+ it's a game of luck on the 3s.

It might last 2 minutes, or 30,000 no problem at 600hp.
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blogsy




Joined: 16 Jun 2012
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PostPosted: Tue Aug 22, 2017 6:25 am    Post subject: Reply with quote Reply with quote including images

To many little things that you need to research and change with the 5s block, like what water pump. Do you drill out the block to suit the 3s head or just use the head gasket that ATS make, Do you really need oil squirters etc etc. Would be great if someone could do a definitive wright up on how to put one together. But like androo says 3s is probably good enough for most peoples power needs.
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Gazza_DJ
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1997 Toyota MR2 Mk2 NA Rev4

PostPosted: Tue Aug 22, 2017 12:37 pm    Post subject: Reply with quote Reply with quote including images

http://www.mr2oc.com/61-3sgte-turbo/395274-how-build-5sgte.html
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blogsy




Joined: 16 Jun 2012
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PostPosted: Thu Aug 24, 2017 5:36 pm    Post subject: Reply with quote Reply with quote including images

Want to build one now [Think]
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