92 mr2 needs help

ck8260 · 06-02-2007, 08:37 PM

92 mr2 with blown rings or valve seals.(blows smoke.The engine is the 5sfe with an aftermarket turbo.I need advice on the way to fix it.I know i need to rebuild or replace.Question is which one do i do.I have been told you can build the 5sfe to handle the turbo but it may be chaeper to get the 3sgte.Please if you have any advice or know where i can get some it would greatly appreciated.
Thanks

92 mr2 owner

CyFi · 06-02-2007, 08:49 PM

If it just smokes on startup its the valve stem seals, and it is not a big deal if you keep your oil level in check. If it smokes all the time it could be a head gasket or rings or something like that. Do a compression test and a cylinder leakage test and listen for where the air is leaking, then you know what the problem is.

ck8260 · 06-02-2007, 08:56 PM

doesnt smoke upon start up, in fact it starts smoking once you get the turbo spooled up and then it continously smokes.less of course at an idle.If i have to take the head off regardless, what would the best set up be.I was thinking using a 3sgte head, but im not sure what else i will need to make it work.

shimric · 06-02-2007, 09:55 PM

If you want to use a 3s head you would have to do a number of things. I'll find the link. 5sgte ftw!

Quote:

Before we start talking about turbo charging, I want to let 5SFE owners know that they can also use the 3S-GTE head for NORMAL ASPIRATED application, but it would require custom made pistons to raise the compression ratio back to at least 9.5:1 or higher, about $550.00 and a custom made exhaust.

Now lets talk turbo ……Remember ……. There is no such thing as cheap turbo charging.

Things to think about before you start this project:

1.How much do I want to spend?
2.How much boost am I going to want?
3.How am I going to control all of this? …. Yes engine Management. I used an Autronic SMC

Engine Requirements:

1. Complete 3S-GTE head with cams, cam gear, timing belt tensioner, 3S-GTE cam belt and a complete inlet manifold..
2. Turbo setup. CT26 with exhaust requirements or what ever you want
3. 3S-GTE head gasket such as the TTE available in a 1.2 and 1.4 mm thickens
4. 3S-GTE oil pump. I am not sure if oil pressure and flow for the 5SFE oil pump is the same as that of the 3S-GTE, therefore my suggestion to use a 3S-GTE oil pump. Better safe than sorry.

Note: If you are going to build a high output motor I strongly suggest you get a set of connecting rods available from Pauter (www.pauter.com) and a set of Forged Wiseco Pistons available from any Wiseco dealer or me. Wiseco require dealers to order a minimum of eight pistons so it might be a good idea for potential 5 SFE turbo builders to do a Group Purchase.

Oil Supply for the Turbo:

This can be done by taping a 10 mm (3/8) elbow into the oil channel on the filter side of the block between the last two main crankshaft journals. Make sure the oil channel is thoroughly cleaned afterwards. There are also other methods to explore.

Now for the real thing…
Presuming that the 5 SFE engine is removed and stripped to the bare block.

1. Thoroughly clean the top of the block. Make sure it is 100% clean
2. Now give the cleaned area a coating of Mechanics Blue
3. Correctly place the head gasket you are going to use on top of the block
4. With a scribe, mark the positions of the water ports.
5. Remove the head gasket.

I used the following procedure to remove metal from the block. If you do not feel comfortable to do so, take the block to your local engineering works and let them do it for you. It should not cost more than say $60.00

Tools Required:
1. Center Punch
2. Slow speed drill
3. 5 mm Drill bit
4. 4 mm Tungsten Carbide burr

Procedure:
1. Center punch the areas to be drilled (these are the water port areas you marked).
2. Now with the drill and 5 mm bit, drill out all the areas marked. Normally two holes per water port. Make sure that you do not drill beyond the marked areas.
3. With the drill and 4 mm tungsten carbide burr remove all the remaining metal
4. Have the block “decked” by your local engineering works.
5. Assemble the engine as if it was a 3S-GTE
6. Make sure the oil supply and drainage, to and from the turbo, is sufficient.

A lot more work involved.

06-02-2007, 08:37 PM	#1 (permalink)
ck8260 No Skills Join Date: May 2007 Posts: 11 Thanks: 2 Thanked 2 Times in 2 Posts iTrader Rating: (0/0% )	92 mr2 needs help 92 mr2 with blown rings or valve seals.(blows smoke.The engine is the 5sfe with an aftermarket turbo.I need advice on the way to fix it.I know i need to rebuild or replace.Question is which one do i do.I have been told you can build the 5sfe to handle the turbo but it may be chaeper to get the 3sgte.Please if you have any advice or know where i can get some it would greatly appreciated. Thanks 92 mr2 owner

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06-02-2007, 08:49 PM	#2 (permalink)
CyFi ShamWOW! Join Date: Oct 2005 Posts: 1,390 Thanks: 12 Thanked 38 Times in 35 Posts iTrader Rating: (10/100% )	If it just smokes on startup its the valve stem seals, and it is not a big deal if you keep your oil level in check. If it smokes all the time it could be a head gasket or rings or something like that. Do a compression test and a cylinder leakage test and listen for where the air is leaking, then you know what the problem is.

06-02-2007, 08:56 PM	#3 (permalink)
ck8260 No Skills Join Date: May 2007 Posts: 11 Thanks: 2 Thanked 2 Times in 2 Posts iTrader Rating: (0/0% )	doesnt smoke upon start up, in fact it starts smoking once you get the turbo spooled up and then it continously smokes.less of course at an idle.If i have to take the head off regardless, what would the best set up be.I was thinking using a 3sgte head, but im not sure what else i will need to make it work.