MIKUNI 40PHH

[LUIS COLCHETE]

Many thanks

 

for your quicly replies

[LUIS COLCHETE]

Hi

 

ggzila

 

Im just grinding the original exhaust mainfold to fit  the new intake.

 

 

But the new intake mainfold dont fit with motorhead, the studs of motorhead dont match with holes of intake mainfold 

 

To fit i need them i need  to do  one hole on the intake mainfold to fit the motorhead and make a hole on the gasket or buy a new one.

 

Is this one choice. Is the correct one? I dont like open more holes ont the motorhead....

 

 

http://s1305.photobucket.com/user/luiscolchetelui/media/DSC_0945_zps93d0d2ad.jpg.html

 

 

http://s1305.photobucket.com/user/luiscolchetelui/media/DSC_0947_zps89390552.jpg.html

 

 

 

Many thanks,

 

Luis

[ggzilla]

Your cylinder head is for an A12 engine

 

Your twin carb intake manifold is for an A14/A15 round port engine (or for a 1990-1994 A12).

 

 

* You can buy a twin carburetor manifold for an A12 engine.

Or

* fit an A14 cylinder head to the A12

Or

* drill a hole in the manifold to fit the A12 if there is room

 

A12 manifold

[LUIS COLCHETE]

HI

 

 

Install a new intake

I ve doubt,

 

 

I have just talked about this.... but

i think the easy way,is open two simply holes on the new intake mainfold and buy a new gasket... and it will resolve my problem.

but my doubt is: one simple stud on original intake was enough to prevents leakages, and ok.

Now two carbs and new intake are heavier than original but nothing to much, i still thinking on stud is enough? If exists intake mainfolds with only hole i think there is no problem 

What do you think?

 

The other solution is remove the 2 studs on motorhead and open 4 new thread in it, but the motorhead looks like a cheess swiss  

I dont like this choice.

 

 

The first solution is enough?

 

Many thanks

 

 

Luis

[ggzilla]

The one-stud type was used for racing. Two bolts attach each intake flange at the bottom. So three fasteners total for intake ports at front and three for the rear intake ports.

[LUIS COLCHETE]

Hi

 

 

Do you know where i can find spare gaskets, diaphragm in case...

 

http://s1305.photobucket.com/user/luiscolchetelui/media/_571_zps8c19fda3.jpg.html

[ggzilla]

Use the IMG link

 

 

You can purchase the gaskets from a carburetor shop. PHH air cleaner/filter gaskets are different from DCOE gaskets.

[LUIS COLCHETE]

Hi!

 

I ve consult the site Wolf Creek Racing and i see the the model

Mikuni/Solex 40pHH Type T i thinks is equal of mine, but the vendor on ebay inform me  the model is Type S5, i think he is wrong? According with them the throtlle Buterfly is stamped 165.

 

Please confirm me

[ggzilla]

Type T means originally fitted to Toyota. Could be model S5.

[LUIS COLCHETE]

I see the picture... and the mention was Mikuni T

How can i have 100% of certain of the model? Must contact Toyota with reference of 21100-88255 green stamp on carb.Because i want a spare of gaskets to keep it in reserve

 

 

 

 

 

Thanks

[ggzilla]

Just get mikuni PHH40 gaskets. I used Weber DCOE gaskets but had to cut extra holes in them.

[LUIS COLCHETE]

Hi!

 

I need help.... from you

 

I can put A14 header on A12 enginee............ I will do these because i have one Harada intake Mainfold with four holes and my actual Head has only two holes and to solve the problem of header, i will buy a A14 head and respective exhaust mainfold to put on my A12 engine.

I think it fits perfect. What do you think? I need your tecnical information

 

The A14 cylinder has the thiner screw to lubrification?

 

 

Many thanks,

 

 

Luis

[ggzilla]

All A-series engines have one thinner head bolt which allow oil to flow through the bolt passage.

 

Yes, A12 exhaust manifold or header will bolt to A14 head. And vice-versa.

 

A14 head and some A12 heads use a 4-bolt intake manifold flange.

 

Some A12 (but not all) have a 2-bolt flange.

 

A12/A14 4-bolt intake manifolds.

[LUIS COLCHETE]

Hi!

 

Many thanks

 

I already bought from a Ratsun member a A14 Head and a header to mount my A12 Engine and fit the Harada Intake mainfold that i bought 

 

I read "the 1967-1973 heads provide oil to the rocker arm shifts in diffrnt locations than 1974 up so when fitting a newer head you may need to redrill the oil passage"

I need compare my actual A12 Head to my newer Head A14.

 

This is true?

 

This newer head will increase some horspepower with my twin Mikuni Solex 40 phh.  Maybe 15 or 20 Hp.

 

Many thanks for all your knowldeges and help

 

Luis

[LUIS COLCHETE]

Hi!

 

I saw this header 1200 gx model south africa i suppose RHD.at a reasonnable price

 

This header will fit my LHD my Datsun 1200?. Or i have to cut it and weld to my A12 actual Header?

 

 

 

http://olx-t.imgrap.com/ui/32/24/65/459041965_1x.jpg?x=1405353161

 

 

Many thanks on advance 

 

 

Luis

[LUIS COLCHETE]

Please let me know if this Header from Datsun 1200 GX  RHD fits my Datsun LHD...

 

 

Many thanks,

 

 

Luis 

[LUIS COLCHETE]

Hi!

 

Vaccum advance on twin sidedraft carburateur is necessary?

The vacum advance canister on a distributor is lilte more than decoration. it is correct?

[banzai510(hainz)]

my 40mm Mikunis one of the carb has a port and has a hose to the vaccum adv. i DONT GET HOW IT WORKS AS IT HOOKS UP TO ONLY ONE POERT AND CYLINDER SO YOU CANT GET A SMOOTH VACUUM

 

My 44 mikunis on my other car does not have this port. But has a SSS distributor with a faster advance. But nothing is hooked up to it.

 

Hope this helps.

 

 

if it runs with out it dont worry about it

[LUIS COLCHETE]

Hi!

 

Where i can find remote reservoir brake master cilinder for my Datsun 1200?