4g61t.org

wondering what everyones out look on the 2L head on the 1.6 should it be done the 2L head is port and polished with 264 cam but i was wondering what it would do for the 1.6 i was tolld my turbo would spool alot slower but ill be able to rev higher but will be running a 16-20 g or a gt28r (the disco) anyway need feed back thanks

I would just wait for the 63 short block and do the complete swap if your going to do that much work. You should set up the 63 engine and get it the way you want and do the whole swap at once. That would be nice.

Turbo will spool slower because of the cam and because the 2.0L head lowers the compression of the 1.6L motor.

You "won't" be able to rev higher but the top end will feel stronger.

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Current:

Hunting for a Miata

Past:

92 200E 1.5L Hatch
92 TSi AWD 6/4
89 Colt GT Turbo

SEARCH is your best answer! Putting the '63 head on the '61 will lower your compression, but the larger ports will give you better flow, helpful if your running a bigger turbo. Just remember to port match the manifolds.

i want to build a 1.6 but i wasnt sure what head to use but i have the 2.0 head so i think ill jus swap the 264 cams into the 1.6 head and put in upgraded valve springs

Actually 264s increase spool up. Even though curtain area is unchaged they provide better low lift flow. What will the compression be lowered to because of the combustion volume increase? I can't see the spool up being affected too much just because of that, and the cams might offset the loss in spoolup from static compression drop.

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1989 Dodge Colt Turbo w/ 4g63t swap
1999 Ford Contour SVT

2.0L Turbo head on a 4g61T is NOT a good idea. Period.

If you are wanting to do this to try and make more power and have the ability to flow more with the 1.6, you could use a 4g67 (1.8 dohc) head. It has the same combustion chamber size as the 1.6 and the 2.0 port sizes-keep the compression the same while having the ability to flow more

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John
89 Colt GT(2)
88 d50 4g63t, crower 272's, dsmlink

DITTO!!

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96 Lancer Stationwagon - 4G61T swap (rebuilt) (4g67 head, 4g63 intake mani), 390cc's, ported exhaust mani/with 2.5" custom d/pipe, TD04-13g (ported), Greddy Emanage (Gold Edition), VR4 18x12x3 IC with custom piping/hose, SR-20 (Silvia) Recirc BOV, Walbro 255lph pump, custom 2.25" press bent de-cat exhaust, ACT 2100 (4g67 g/box), front EVO II brake/booster upgrade

so swap the 264s into the 4g67 head and do lifter springs and i should beable to rev higher so put on a 20g so i have power till 9 grand right

Haha. Not really. 20G's are small and so are 264's. You'll make power to like 7,000rpm maybe, if you're lucky.

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91 GSX - 511fwhp and 352 lb/ft 25psi 110 octane, 7.68 @ 95.9mph 1/8th 21psi 91 octane, 11.93 @ 112.9mph, 117.7mph best trap speed, 20psi 91 octane
98 Volvo S70 T5 - DD

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