750 heads.

[MikeyVeitch]

Would anyone be able to tell me the years and differences between the different 750 heads ‘teapot’ ‘dot’ and the gsx750f head. Bear in mind that I know nothing at all in terms of the differences here so any information would be greatly appreciated. 

[Joseph]

Has the search engine come up with any tips ?

[Swiss Toni]

Teapot and GSX750F engines are one and the same. 
Do you mean differences between Teapot and 750 Slingshot? 
Differences may be intake angle and valve size. Definitely higher lift/duration in the Slingshot cams!

Edited November 3, 2022 by Swiss Toni

[Nik]

DOT heads were used on the 88-89 GSX-R 750 and on the 89-97 GSX-F/Teapots.

The DOT heads have steeper inlets, appr. 15 mm higher than the 1100/1200 heads. 

The valve diameters are the same as on the 1100/1200.

Combustion chambers are appr. 20 cc, compared to 26.5 cc on the 1100/1200.

Cams were different between the R and F.

Edited January 6, 2023 by Nik

[SiBag]

@Nikthat is probably the most concise and best answer we have had on the whole dot head question. Could do with it making it a stick or adding it to the vault info . 

[wraith]

I don't think the long stroke and short stroke 750 heads swap? 

[Dezza]

11 hours ago, Nik said:

DOT heads were used on the 88-89 GSX-R 750 and on the 89-97 GSX-F/Teapots.

The R DOT heads have steeper inlets, appr. 15 mm higher than the F DOT heads. 

The valve diameters are the same as on the 1100/1200.

Combustion chambers are appr. 20 cc, compared to 26.5 cc on the 1100/1200.

Cams were different between the R and F.

That's very interesting to know, the difference between GSXR and teapot DOT heads: so when using one on a larger engine with limited space, it seems the one to go for is the teapot. I am guessing the GSXR dot heads have wilder cams than those for teapots.

[wraith]

As in the sticky thread 

 

[wraith]

1 hour ago, Dezza said:

That's very interesting to know, the difference between GSXR and teapot DOT heads: so when using one on a larger engine with limited space, it seems the one to go for is the teapot. I am guessing the GSXR dot heads have wilder cams than those for teapots.

As above 

[Duckndive]

2 hours ago, wraith said:

As in the sticky thread 

 

can you post a link to it ? 

[wraith]

1 hour ago, Duckndive said:

can you post a link to it ? 

Errrr 

Sticky Thread in oil cooled 

Interchangeability of carbs and carb rubbers for oil-cooled engines  

Page 5 

 

[Lachie04]

"The R DOT heads have steeper inlets, appr. 15 mm higher than the F DOT heads."

 

Both DOT heads R and F have the same inlet tracks the only difference is the cams lift & duration 

98 and on model gsxf the mark 2 teapot went back to the standard long stroke head

set up

 

 

[clivegto]

1 hour ago, Lachie04 said:

 

 

Both DOT heads R and F have the same inlet tracks the only difference is the cams lift & duration 

98 and on model gsxf the mark 2 teapot went back to the standard long stroke head

set up

 

 

He's right you know 

Edited November 5, 2022 by clivegto

[Dezza]

OK, so no difference in carb positioning between GSXR v teapot DOT heads; the difference is DOT v non-DOT, with DOT being higher

[clivegto]

8 hours ago, Dezza said:

OK, so no difference in carb positioning between GSXR v teapot DOT heads; the difference is DOT v non-DOT, with DOT being higher

Yes so far as I'm aware. 

Edited November 5, 2022 by clivegto

[Nik]

On 11/5/2022 at 6:57 AM, Lachie04 said:

"The R DOT heads have steeper inlets, appr. 15 mm higher than the F DOT heads."

 

Both DOT heads R and F have the same inlet tracks the only difference is the cams lift & duration 

98 and on model gsxf the mark 2 teapot went back to the standard long stroke head

set up

 

 

Of course! Meant DOT vs 1100/1200. Corrected my post.

[jonny1bump]

Does anyone know why on 750 slingshot only why did suzuki not use the the valve spring seat plate.

[jonny1bump]

This plate on exhaust side.

 

Edited January 15, 2023 by jonny1bump

[jonny1bump]

[clivegto]

No but I did wonder myself.

[Nik]

It's a cooling device to help dissipate  heat from the exhaust valve area. 

Edited January 15, 2023 by Nik

[george 1100]

⬆️ this and to dissipate heat from valve springs

[clivegto]

Some are different shapes and some don't have them.

[Gixer1460]

11 hours ago, Nik said:

It's a cooling device to help dissipate  heat from the exhaust valve area. 

Don't see how - taking heat from one side and transferring it to opposite side equally hot valves ! ! ! And steel is a crap heat transfer material when compared to aluminium.

[DAZ]

Is this part listed on both long and short stroke 750's ? Or just peculiar to one ? Not that I've the foggiest but it may help if it's only on one,say to stop the bottom spring seat hammering into the head under racing conditions on a higher revving short stroke 

Edited January 16, 2023 by DAZ
Added text