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Message started by weger on 05/12/21 at 00:21:47

Title: Suzuki ST 400 Tempter
Post by weger on 05/12/21 at 00:21:47

Let me introduce myself, I am Klaas en I live in The Netherlands also known as Holland.

I found a  Tempter somewhere it has the wrong frontwheel but that does not bather me much.
This engine was imported from Ireland, at the moment it looks like it is the only one in my country (not sure)
I am trying to get it to run, wiring was a mess and some other problems.
Will ask questions later ;)

Title: Re: Suzuki ST 400 Tempter
Post by Dave on 05/12/21 at 03:19:17

Nice!

A few of us on this forum have marveled at how nice those are.....and are sorry they were never imported into the US!

Title: Re: Suzuki ST 400 Tempter
Post by verslagen1 on 05/12/21 at 07:04:54

Our engine numbers start with P401-******
If it's the same, then it's a 650

Title: Re: Suzuki ST 400 Tempter
Post by Zepp on 05/13/21 at 08:52:46


2634363423510 wrote:
Let me introduce myself, I am Klaas en I live in The Netherlands also known as Holland.

I found a  Tempter somewhere it has the wrong frontwheel but that does not bather me much.
This engine was imported from Ireland, at the moment it looks like it is the only one in my country (not sure)
I am trying to get it to run, wiring was a mess and some other problems.
Will ask questions later ;)


Welcome, Im Swedisch and got my a 2000 LS 650 Savage.

It seams that tempter is a dual cylinder bike.

https://en.wikipedia.org/wiki/Suzuki_GR650

But your bike seems to have our one cylinder 652 CC engine?

Its this, your frame looks different and perticulary the seat.

Title: Re: Suzuki ST 400 Tempter
Post by ohiomoto on 05/13/21 at 09:25:22

No Zepp, That is the GR650 Tempter that was sold in the US.  The ST400 Tempter was sold outside of the US and it is a 400cc single.

https://japan.webike.net/SUZUKI/TEMPTER400/626/m-spec/

Title: Re: Suzuki ST 400 Tempter
Post by weger on 05/15/21 at 11:27:25

Well here is the answer, its areal 400.
I am just exploring the engine, never had such before and as I mensioned before there is nothing known about this type here.
I ride bikes for over 50 years and never seen one before.
I found 2 liters ! oil/gas mixture in the aircleaner house, nor normal !!
And I am still trying to get it ready for the inspection for registration.

Title: Re: Suzuki ST 400 Tempter
Post by Dave on 05/15/21 at 13:58:28

We know a little bit about how the 400 and 650 engines are different.

They have the same stroke - but the 400 has a smaller piston bore.

The connecting rod is 1mm smaller at the top end - that prevents the 650 piston and cylinder from being a "bolt on" swap....you have to change the crankshaft as well (or just the rod but that is a lot of work and it is easier to get a used 650 crankshaft).

The 400 does not have the compression release that is on the 650.

Title: Re: Suzuki ST 400 Tempter
Post by weger on 05/15/21 at 14:34:39


594A5D5C434E484A411E2F0 wrote:
Our engine numbers start with P401-******
If it's the same, then it's a 650

My engine number starts with K409-....

Title: Re: Suzuki ST 400 Tempter
Post by Zepp on 05/17/21 at 13:23:39


4153515344360 wrote:
Well here is the answer, its areal 400.
I am just exploring the engine, never had such before and as I mensioned before there is nothing known about this type here.
I ride bikes for over 50 years and never seen one before.
I found 2 liters ! oil/gas mixture in the aircleaner house, nor normal !!
And I am still trying to get it ready for the inspection for registration.


Newer ever seen this bike in Sweden.
But there was a similar Yamaha SR 500.. it seems that this bike was 400 in moste other countries.. probably some regulations about newbies?

And there is not nomal to find any oil or others in the airbox.. on any bikes/cars!

My suggestion is that the pistone rings gone worned out, putting to much of the presure going to crankcase?

And after exhauste regulation come to be world wide, there is a pipe that ends in the airbox!

Title: Re: Suzuki ST 400 Tempter
Post by Dave on 05/17/21 at 14:10:56


18273232420 wrote:
[quote author=4153515344360 link=1620804107/0#5 date=1621103245]
I found 2 liters ! oil/gas mixture in the aircleaner house, nor normal !!
And I am still trying to get it ready for the inspection for registration.


And there is not nomal to find any oil or others in the airbox.. on any bikes/cars!

My suggestion is that the pistone rings gone worned out, putting to much of the presure going to crankcase?
[/quote]

The most common cause of oil/gas in the airbox on a Savage is the stock vacuum petcock has a leaky diaphragm - and the fuel flowed down the vacuum tube and filled up the airbox.  And the fuel can also flow down the vent tube and go into the cylinder and fill up the crankcase with gasoline.....then when you start the bike the crankcase sends a lot of gasoline/oil mix out the vent tube.

Title: Re: Suzuki ST 400 Tempter
Post by weger on 05/17/21 at 14:20:50

Okay, thanks a lot this will help I think

Title: Re: Suzuki ST 400 Tempter
Post by Zepp on 05/17/21 at 14:36:37


546F6275646873756E666B74070 wrote:
[quote author=18273232420 link=1620804107/0#8 date=1621283019][quote author=4153515344360 link=1620804107/0#5 date=1621103245]
I found 2 liters ! oil/gas mixture in the aircleaner house, nor normal !!
And I am still trying to get it ready for the inspection for registration.


And there is not nomal to find any oil or others in the airbox.. on any bikes/cars!

My suggestion is that the pistone rings gone worned out, putting to much of the presure going to crankcase?
[/quote]

The most common cause of oil/gas in the airbox on a Savage is the stock vacuum petcock has a leaky diaphragm - and the fuel flowed down the vacuum tube and filled up the airbox.  And the fuel can also flow down the vent tube and go into the cylinder and fill up the crankcase with gasoline.....then when you start the bike the crankcase sends a lot of gasoline/oil mix out the vent tube.[/quote]

I was presumaly thinking about oil!

But then it should be a small/bigger part of grease in the airbox.

But your sugestion is another cause of it, perticualy if its liquide ones.

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