Civic-EG.com Forum 3.3.1

- Wed Oct 27, 2010 9:01 am #220240 A Member frome here asked me to make an extra thread here from my engine built.

I started my D15z1/D16z6 frankenstein built.
Means z6/9 short block with z1 head, z6 IM, z6 TB, 4-wire O², Modified P28 ECU, 240cc Inj, VX trani. The head is going to be ported and milled by .002''. Disassembled bouth engines and started cleaning.
here are some pictures:
VX D15z1 swirl head




VX D15z1 piston in block



comparison z6 / z1 head


comparison z6 / z1 cam gear (same)


this will be the shape when it's ported


head complet disassembled and cleaned



I had my z1 head in the Computertomograph to see how the ports are shaped and if there are some cracks. The head is in perfect condition!

Here you can see the slight difference between the swirl (lower in port) and the non swirl port (upper in port)




Intake

Outtake

Last edited by robster on Wed Feb 09, 2011 5:32 pm, edited 2 times in total.

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- Wed Oct 27, 2010 9:02 am #220241 Valves: in 27,5mm / out 23,5mm

The red arrow shows the ''swirl port'' when the engine is running in 3-valve mode. You can see slight diference to the other port (green arrow)





and the minimum wall thicknes is 4mm to the waterjacket!

The exhaused side is at the moment 29x39mm = 950mm² and will be ported to 30,5x42mm = 1081mm²
The header ports are 32x44mm = 1188mm² to create a step for anti reversion.

The intake side will be port matched to the z6 IM 10mm deep, the rest will only be cleaned.

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- Wed Oct 27, 2010 9:03 am #220242 received today my head from the welder and started filling up the valve stem area of the intake side.



made some wood sticks to seal the valve guide: 6mm grinded to 5,4mm and wraped with some tape


I used a 2-compound plasticine that resits up to 300°C


before


after


The protruding material will be shaved when the head is getting ported.

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- Wed Oct 27, 2010 9:03 am #220243 News!

Started my port work today, i must admit that its my first port work i've ever done!

My weapon's of choice




And now some results

Intake side





Exhaust side

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- Wed Oct 27, 2010 9:05 am #220244 Update! Found some time.

Thanks to Rushi's advice i swirl grindet my valves!

intake




exhaused

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- Wed Oct 27, 2010 9:06 am #220245 Some pic's i'd like to share with you. The z1 swirl ports!






in the left upper corner you can see the bended shape of the port to create the swirl! Funny looking isn't it!

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- Wed Oct 27, 2010 9:07 am #220247 lap my valves in. A dirty job but it had to be done!

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- Wed Oct 27, 2010 9:08 am #220248 Found some time to get allong with the engine.

Cleaned, sandblasted, painted and rehoned the block. The Flexhone is a realy good tool for deglasing.



borrowed some measuring tools from work and did some measurements. And this are the results:

Piston to wall: Z1=36µm Z2=38µm Z3=40µm Z4=37µm
rod play: Pl1=30µm Pl2=30µm Pl3=31µm Pl4=29µm
main play: HL1=22µm HL2=37µm HL3=29µm HL4=39µm HL5=25µm






Put the crank and pistons in.



Tomorrow im going to start the head assembly.

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- Wed Oct 27, 2010 9:09 am #220249 Getting closer. Pre assembled the mani




Done! Now about the head, getting the valves in was a real pita when you dont have the right tools. I used a ring spanner and my fingers[po]




The next thing was the oil pan. Cleand it and put some new paint on it. Put some new skrews in because the old ones where rustet as hell!




Hehe, now everything is clean and sealed

After that i used some klay to check how the quench aera looks like.



Bang! That's tight only 0,5mm left.




And how about the valves?



They got so mutch room, the dont even touch the klay!

So now that i have everything in the green zone it's time to install the ARP head studs.



Allmost done. Some parts are missing like some brakets and new waterpump etc.

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- Wed Oct 27, 2010 9:10 am #220250 small update, made an new valvecover!

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- Wed Oct 27, 2010 9:11 am #220251 Found somthing strange today while i was checking my timing!

The cam gear @ a D16z6 and D15z1 should look like that



but in my case it looks like that when the piston is at TDC!



is my timing of?

Do i have to use an adjustable cam gear to get to the OEM z1 specs?
And how do i know how mani degree i have to turn it +-?

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- Wed Oct 27, 2010 9:14 am #220252 Solved the problem.
OK, i instalt an adjustable cam gear (Skunk2 tuner series) and turned it 4°+ that looks like 1/2 tooth.

This is how it's at the moment

crank TDC


cam gear +4°

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- Wed Oct 27, 2010 9:14 am #220253 I'm getting closer........

Freshed up the gearbox so it suits the whole engine theme. Used a wire brush on a hand drill and sandblasted it before the heatpaint came on it.

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- Wed Oct 27, 2010 9:15 am #220254 One stepp more ahead. New Fidanza flywheel and Exedy Stage1 clutch.




And after that i put together what belongs together!





here and there some littel stuff to do and ther engine is ready for the wedding!

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- Wed Oct 27, 2010 9:16 am #220255 I finaly managed to get the motor in my car and started it for the first time..... its alive!!!!

It runs a little lopey and needs some fine tuning, but i'm glad that it runs!

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