Ok so I have a 98 EK 4 door and plan on doing a swap soon from a d15b vtec to a GSR. Questions I have are these, do I have to use a full size radiator or can I just use the stock half radiator that comes in the EK? And are there any specific changes I need to make like this? I got the rear mount from a Si, b series linkage so far because I know they have to change but is there anything else? Other than like ecu and harness because that's common sense I would believe. Thanks guys!

Swap parts needed all are dependent on which year GSR motor you buy, also what parts that will already be coming with the motor.
Radiator does work but I dont condone it expecially in hotter climates.

Source a 99-2000 civic Si half radiator, its just as small but has the larger inlets, and Im sure is designed with faster/better flow then the others due to that car leaving the factory with twincam Vtec

I'm getting the swap complete that says it comes with mounts and linkage but I've had them because I got them in a trade with a ton of parts for a set of rims. So since I've always wanted to B it I figured I'd just hold on to them. But pretty much with this swap off of H-motors it says it includes everything. So ill just have to look into a Si radiator. That's great!! Thanks!

make sure the swap you buy is 96-98 OBD2A

if its the complete changeover you will be needing a 96-98 civic ex harness from the US market, unless you can wire alot yourself.

Del-sol vtec's that came with a B16 from the factory even utilize a better half radiator as it is twin core, I recomend that over the 99-2000 si one.
94-97 civic del-sol Vtec will be the car it comes from.

Basically source your swap then get back at us if you have any questions/hang-ups then,
goodluck bud

It's a 98 EK Ex so I have the vtec harness. But the motor say its a 94-97 coming with a p72. I figured if its coming with the ecu and harness I wouldn't have any problems. Here's what I'm looking at. http://www.hmotorsonline.com/shop/sc...age&item=30009

Oh and one more thing. I see that motor has a EGR valve yet I don't have one does every GSR have one or just that being obd1?

a gsr never had an egr valve.

Already mentioned but to back it up, the gsr did not have an egr valve. Ever.