GSX1700 piston kit

[Blubber]

Small update.

The ported and flowed head arrived!

Took me some time to gather the needed funds so there is one part of the delay.
The other contributer was the fact I bought it in the South East corner of Russia. Took a month to get to me in the Netherlands.

Like any postal service there is some damage: 1 fin is damaged.

I took the head to a revamp company: he will not attempt to repair. Welding directly next to the head gasket area is a no go.

He did clean it, trued it and installed the stem seals I supplied

[Blubber]

I have ordered a complete gasket kit for the spare 14 engine waiting under the bench.

I need to order a custom head gasket due to the 89mm pistons.

Atm the injectors for this project are being cleaned.

I bought some replacement injectors via Aliexpres to prevent this but....They don't seam right.  The ad says flow matched but this surely doesn't mean the spray paterns are also matched.

3 of the Ali injectors have 4 holes in them, 1 has 1 hole in it.

Hope to post pics soon of my cylinders soon

[seth]

coming together buddy
I'm following with great interest .
on a sideline i got a waterproof case for my samsung s5 from ali express
the 1 that came was for a s6.
if you get stuck i have a complete set of throttle bodies with all parts so git spare everything.
hoping to get my head ported and throttle bodies bored out bigger .

[Blubber]

coming together buddy
I'm following with great interest .
on a sideline i got a waterproof case for my samsung s5 from ali express
the 1 that came was for a s6.
if you get stuck i have a complete set of throttle bodies with all parts so git spare everything.
hoping to get my head ported and throttle bodies bored out bigger .

Hey Seth, thanks for the offer.

I bought the remains of a project so got most things i think i need.

- Whats your time line?

regarding the bigger throttle bodies... Who will be doing that?

[seth]

hopefully over the winter or next year .
still looking for someone to bore out and fit bigger butterflies to the throttle bodies and then port the head to match them .
thats the main constraint at the moment.
hopefully will have the bike back on the road this year but been to lazy and just taking the standard one out .

[BlackAdder]

Taking them oem throttlebodies apart so that you can put them together too might be a bit tricky. I destroyed my own set (cant remember exactly why but it had something to do with the butterflys I think...)  I also destroyed one set of gsxr throttlebodies ( I might have misplaced some parts during the garage move tho...) 

And for the cams - the yoshi stg-1's might be too mild (that was one point what my dyno-dude wondered) so you could save a buck just getting the oem's  milled to a bit better form.

I'm running bigger injectors and oem fuel pump, and it runs out of fuel @5500rpm, so you need something else than oem.

And that valve head, I want bigger. No, I NEED bigger to mine :D

Nice!

[Blubber]

Both inlet and exhaust valves are 3mm bigger, inlet port and exhaust port are roughly 3mm bigger. All flows are matched
This head is capable of making power up to 12.000rpm.

Boris first had a custom grind Webcams in them. Whilst they were good for top end power, city cruising was not an option anymore.
For driveability the ST-1 was the best op the 2.

http://shop.yoshimura-jp.com/en/product/syousai.php?id=871

However...

I have been looking into street regrinds and came across Piper Cams in the UK

http://www.pipercams.co.uk/pipercams/www/product_browse.php?type=&manufacturer=22

and this german company:

https://www.oehlins.info/Nockenwellen-umschleifen-Typ-SUZ30/Suzuki-GSX-1400::2643.html

The biggest difference i see is that the duration of the germans cams are bigger with less lift than the Yoshimura ones .


- What do you think? @BlackAdder


Regarding the throttle bodies:

http://www.hafner-racing.at/Datenblatt/Suzuki%20GSX%201400%20HRC/suzuki%20gsx%201400%20hrc.htm

Looks like they adapted the gsxR1000 2001 (K1) model to their needs to release another 20HP


Google translate might help to read those last websites 

[T 24]

Those numbers are not telling all. If you look those profiles from pictures, you can see the difference (yoshi vs. german).
I think those German cams are much wilder. (but that picture is not from 14 cams, sorry)

[Blubber]

No need to be sorry , you did not build that website  i know it's just a example picture they used.

Just noticed the earlier mentioned german company uses the same grind and name as Kent Cams.

I have e-mailed 2 companies: http://www.gw-racing-parts.de/index2.php?view=nocken&HID=25&lan=en
In the past they did offer a regrind for the GSX1400

I also have asked Kent cams if they still can supply the SUZ30 grind.
http://www.kentcams.com/product-details/880/Camshaft/Camshaft/SUZ30--Street/

Curious to see what they can offer.

[kja]

Keep us posted on what you find out for the cams, I suspect the Yoshis are ok on a standard motor but something else will be neded on a 1700. STILL waiting on my cylinder head coming back, its a year now, not too happy.

[Blubber]

Keep us posted on what you find out for the cams, I suspect the Yoshis are ok on a standard motor but something else will be neded on a 1700. STILL waiting on my cylinder head coming back, its a year now, not too happy.

WOW... I know a few retired people that are 200% more occupied then when they worked... ( incl. my dad )  and from memory Roger always took his time.

But even to his standard... A year is slow.
Hang on, he does keep his promises. 

[seth]

i remember back when i put the yoshi cams in my 14 after running it in me and a friend who had Kent cams did and in road comparison.
the yoshi's had loads more low and mid range than the kent cams.
also on the same dyno the kent cams had almost the same peak horsepower and torque.
but but kent cams had a massive whole in the lower and mid ranges compared to the yoshi's with a much straighter line on the graph.

[BlackAdder]

I haven't searched cams that much but bigger lift aint aint allways the way to go - if you think about it the peak lift is not that relevant, unless the duration is long. Usually it is'nt and the valve stays there just a fraction of time.

Now you have way bigger valves in your valve head than stock, and it flows whay different than the rest soo it's hard to say what works.

What I meant was that you could save some $£€ by taking your cams to a shop where they'd grind them to yoshi profile.

[Blubber]

i remember back when i put the yoshi cams in my 14 after running it in me and a friend who had Kent cams did and in road comparison.
the yoshi's had loads more low and mid range than the kent cams.
also on the same dyno the kent cams had almost the same peak horsepower and torque.
but but kent cams had a massive whole in the lower and mid ranges compared to the yoshi's with a much straighter line on the graph.

That does ring a bell.
On the old org, a German member did a similar test. I think his name was Teufel Raser. 

Looks like yoshimura cams or grind are the way to maintain cruiseability.

Will look into info from Maggie / maverick.

[seth]

the 2 graphs were overlaid on the same print out the differences were very noticeable and on the road even more so .
it was all about top end with the kent cams and lift was achieved by a regrind (smaller reprofiled lobes)and thicker shims to get the hight.
hope that makes sense.



p.s. both graphs were much stronger and steeper than a standard bike .