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| WagonDad |
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Missed the ported exhaust bowl
_________________ 4.0L EF Fairmont Station Wagon. EL GT Snorkel. K&N Pod in air box. 3" Intake piping.
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| Walkinshaw |
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Did you take much port material out or just blend the port roofs/floor into the seats?
_________________ Soo many idiots. So few bullets |
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| WagonDad |
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Gday Wakinshaw, On the intakes i took a small amount out of the bowl area but mainly to blend to the valve insert, the main area where I removed material was at the entry to the port, it tapers off quite quickly creating a bump so I blended the first 25/35mm for a smoother transition. On the exhaust the original port is quite small and goes around a slight bend, so I reduced the short radius, took out about 2mm of material blending back into the port roof, looking down the port it heads to the left so I took out about 2mm from the right hand side radius (could have taken more I think). The casting on the head are supprisingly good but there is still a fair bit of room for improvement. Hope the effort has been worth it spent 22hrs in total but I am pretty fussy, probably could have gained the same results in 2/3rds that time but im more than happy with results.
_________________ 4.0L EF Fairmont Station Wagon. EL GT Snorkel. K&N Pod in air box. 3" Intake piping.
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| CHEF |
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Good stuff... better to take your time, your not paying yourself by the hour
Im keen to hear about the results. On a side note, whats involved in stripping and re assembling the head? Any special tools needed? |
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| WagonDad |
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Intake ports.
_________________ 4.0L EF Fairmont Station Wagon. EL GT Snorkel. K&N Pod in air box. 3" Intake piping.
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| WagonDad |
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Exhaust ports. Got the valves fitted today, got a three angle cut done and had the leading edges on the valve face chamfered. Its the only mods done so far but it lays the basis for alot more.
_________________ 4.0L EF Fairmont Station Wagon. EL GT Snorkel. K&N Pod in air box. 3" Intake piping.
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| data_mine |
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*drool*
_________________ 1998 DL LTD in Sparkling Burgundy, daily, 302W, stereo, slow |
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| WagonDad |
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Only removed one set of valves so I could have a prtactice removing material before attacking the new head. I used a couple larger sockets and a F/G clamp, had to rattle or knock the socket on the spring side to loosen the collets. Had the engine shop remove and refit the valves and springs.
_________________ 4.0L EF Fairmont Station Wagon. EL GT Snorkel. K&N Pod in air box. 3" Intake piping.
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| Walkinshaw |
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Are you going to get your handy work flow benched? Would be very intresting to see what improvement has been made.
_________________ Soo many idiots. So few bullets |
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| WagonDad |
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As much as I'de like to the the fairmont station wagon is my wifes family taxi and its been off the road for nine days now while i figured out what was wrong and then indulged myself with the port work. I hope to have pacemaker PH4499's and a lukey 2 1/2 exhaust fitted this week and then visit Kwinana drag strip, should get a few laughs in the gradpa wagon.
_________________ 4.0L EF Fairmont Station Wagon. EL GT Snorkel. K&N Pod in air box. 3" Intake piping.
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| xpression |
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off topic i know, but nicee part of the world mandurah is
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| Jaysen |
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my 2c worth
_________________ Dima, Mitch & Jay's RPD |
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| blackjack_original |
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Posts: 3516 Joined: 8th Nov 2004 |
[self-deleted]
Last edited by blackjack_original on Fri Jun 06, 2014 4:57 pm, edited 1 time in total. |
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| Slick |
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good stuff
do you Cc after porting?
_________________ Mind f**k!!! it works on feeble minded ignorant sheeples... there's plenty of em on this site... some are very intelligent but by god they are so thick!!! Pakrat wrote: You can buy them seppertly
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| WagonDad |
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Wow, I didn't know you could remove the valve guide down level with the port floor, obviously the valve stem is still there but that mod has got to be a big flow gain. Iv'e kept the soft head so I can have a play and see how far you can take the porting. I was pretty conservative having never done any thing like this before and having a brand new head, but seeing photos like that one makes me realise you can go a fair bit further and not stuff things up, food for thought for future mod's. Yes Mandurah is a pretty special place, you take a bit for granted when you live here.
_________________ 4.0L EF Fairmont Station Wagon. EL GT Snorkel. K&N Pod in air box. 3" Intake piping.
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