Bart's next fun project

i just aquired a brand new head for my ca18et.. so i will be port matching everything and also porting and polishing the int/ex myself.. i have been reading up on it and also got a few pointers form some pros and looks like its very doable our heads are very easy to port compared to a dohc......... i will alos mill off 1mm off the head to raise c/r a bit to help spool up the t28

i will take intensive pics of the whole process with alot of detailed before and after pics to show where i took stuff off...
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bart
'86 INTERCOOLED Turbo
1/4 mile: 14.964 @93.02mph
CEO of:
"Barts Parts Incorporated"
http://geocities.com/bartc_j
http://members.cardomain.com/bartc_2

what noone has any comments about what im doing....?
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bart
'86 INTERCOOLED Turbo
1/4 mile: 14.964 @93.02mph
CEO of:
"Barts Parts Incorporated"
http://geocities.com/bartc_j
http://members.cardomain.com/bartc_2

interested as i am, I, owning a CA20E, have no use for this. icon_sad.gif. One day i'll have an FJ... maybe tomorow... maybe the next day... maybe never. but one day.
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Geoff Golda
1986 200sx Notchback, CA20E

I'm interested bart. I'll be doing something similar too very soon.
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Travis Hatt
85 Nissan 200sx w/CA18ET: Stock
1/4 Mile: 16.57 @82.21 MPH
CA20E For Sale

good luck, let us know how it turns out.
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Dan

That would be very helpful, ive been wanting to learn how to properly port and polish a head.
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1988 S12 Turbo.
1986 Dodge Colt Turbo. (RIP) Hatch
1987 Dodge Colt Turbo. (RIP) 4 Door
Some people call me the colt killer icon_smile.gif

Heh, I'm interested.

But I'll tell you now, there's just not a lot of material that can be removed for a port job. BUT ... the spare head I ported had a ton of casting flash (just left over aluminum slag) in the intake side. On the intake gasket side, you can really open it up ... pardon the craptacular picture, but if you look at your head, you'll get the drift.



the exhaust side really necks in and down, and can be opened up a fair bit too.



In the combustion chamber, I found there was a pretty brutal ridge right where the plugs come through, so that was smoothed out and polished.



Geoff ... the ca18et and ca20e use the same cylinder head. A ported/milled head could really help you NA guys make better power.
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1987 200sx CA18ETi
1972 Dodge Charger 413ci/6.6L
1968 Mercury Cougar 289ci/4.6L ForSale
Matt Lamperd
http://www.angelfire.com/freak/brutesquad/index.html

I polished out a head this summer and fitted along with a new turbo.
Like Mr 200 said the intake side just needed the casting ridges taking out and a bit of general tiding up. I just did the same sort of thing on the exhaust side too. I also made sure that all the ports on the head and manifolds matched the gaskets.
I wish I got some pics but I dont have a digi cam.
I also dont know how much difference it made to performance as I fitted it along with a brand new hybrid turbo. The car did get faster but I suspect the turbo had more to do with that than the polish job! icon_wink.gif
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ALL NEW PICS HERE!
http://www.cardomain.com/member_pages/view_page.pl?page_id=382417

SEE MY MATE'S CAR @
http://mazda.p7.org.uk/porsche%20web/index.htm

any power is better than no power RIGHT ! icon_biggrin.gif Right now im pushing for as much as my little ca20et will put out. Even if i get 1hp more from somehting, thats 1hp more than i had the day before !
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Alex Ruc
1985 Notchback CA20ET /w t25 and all the accessories (blown head gasket at 10psi)
Current rebuild in process. Massive Rebuild.

not as easy as one would think. I might have choose the hardest way to do it, but ill have the only CA20ET notchback that ill know of. a FULL wiring harness transplant is needed. from front to back + all the turbo components + an engine rebuild is probally essential.
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Alex Ruc
1985 Notchback CA20ET /w t25 and all the accessories (blown head gasket at 10psi)
Current rebuild in process. Massive Rebuild.

for all this damn work...ill just be happy to have a running turbo car again. Might suprise myself and make a powerhouse though.
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Alex Ruc
1985 Notchback CA20ET /w t25 and all the accessories (blown head gasket at 10psi)
Current rebuild in process. Massive Rebuild.

if you wind up with a legend you'll be happy. I'd love to turbocharge/intercool/dohc my CA20, but it's just not worth it in time or money. It would be cheaper to drop a VG30DETT in there, however not practical at all.
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Geoff Golda
1986 200sx Notchback, CA20E

true...back on topic, bart. I bout a kit from Standard Abrasives for $42 + ree shipping, and was wondering if you have already started on the port and polishing process? Now im home for the holidays, the Ca20eti project is back on a rool and thats a step on the list.
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Alex Ruc
1985 Notchback CA20ET /w t25 and all the accessories (blown head gasket at 10psi)
Current rebuild in process. Massive Rebuild.

sorry to take so long to get back to you but i have been really busy with work and life and havent been on here for almost a month... now that i have some more time i will be able to finish up the head and then get it on and see what happens
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bart
'86 INTERCOOLED Turbo
1/4 mile: 14.964 @93.02mph
CEO of:
"Barts Parts Incorporated"
http://geocities.com/bartc_j
http://members.cardomain.com/bartc_2