View Full Version : 3 gen prelude vs Accord Block

01-06-2005, 09:31 PM
Has anyone ever delt with putting an accord head on the prelude block?
the pair i have now will not work together due to a different location of the oil jet. is there any solution to this problem short of getting another block?

The story is , i bought the car for $10. the head was off of the engine.
I figured no problem , i'll just "put it back on". well obviosly the head was warped so i got another from a friend. when i went to put the head on, i set the gasket in place and noticed the oil jet was holding up the gasket in the back. :rocket: The jet is in the wrong place IE:in front of the center head bolt rather than behind. :mad: can this be fixed by welding the hole on the head closed and re-drilling the jet into the head bolt channel? Or is there any one who wants to trade an 87 lude' block for an accord block? :lol:

01-06-2005, 10:05 PM
just go to the junk yard and pull out a prelude head, should be like $50, then have that head rebuilt, the shop around here charges like $200 to rebuild the head.

that would be better then trying to put a head on a block it doesn't go to.

wait a minute... 87 lude is the same block as an accord, are you sure your head is from a 86-89 accord, the 84 to 87 lude has the exact same engine... and the 84-87 lude is actually 2nd generation lude

01-06-2005, 10:39 PM
My 86 Prelude Si had the oil jet on the back of the block.

01-06-2005, 11:00 PM
The accord head has the oil jet on the intake side.

01-07-2005, 08:19 AM
the problem with a lude head that matches is that it has the intake pattern is for dual carbs. i'm not really sure how or why this block was put in this car,but i hoped someone else has seen the difference between the two. it may be a different year of block though. i have no numbers to match up since they have been ground off by the guy i bought it from. :mad: i'll try to take some pics of it today and show every one what i mean.

01-07-2005, 09:12 AM
The A18 had dual carbs the A20 had EFI

01-07-2005, 11:51 AM
it is possibly an A18. wasn't that one from the 84 & up lude? well then i have 2 A18 blocks for sale one good one bad rod, 2 A18 heads, 2 dual carb intakes With carbs, and a few misc parts for sale i just got a low miles complete engine (A20A) for $200! :thumbup: so if anyone is interested all parts are CHEAP!