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Old 08-23-2018, 02:38 PM   #1
LeedomtoFreedom
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Default Opinion on engine swap

I know this has been tossed around but I'm just asking for a quick poll

Currently with a b230ft, hx35, t5 trans. This was my starter car and it's where I cut my teeth on working with cars, so some of the solutions aren't perfect.

Considering making more power, but suffering from some running issues

Should I...

Stick with redblock and go all out, fix issues and potentially megasquirt blah blah

or

just go straight to whiteblock and start fresh.

My thought process leans with whiteblock because it seems as a better long term solution, better power, dohc, better for hx35 without lots of money. newer engine too that's much more available than redblocks. Thinking long term
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Old 08-23-2018, 03:04 PM   #2
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Well, you already have a trans that can handle a more powerful redblock.

What are your realistic power goals? If you build a moderately powerful redblock you can have long service life. A bit less fabrication for a redblock but both paths have lots of information on accomplishing what you want.

White block swaps are nice but I would build the redblock since I like that choice myself and you asked my opinion. lol.
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Old 08-23-2018, 03:09 PM   #3
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Realistic goals are key here. Sticking with the redblock is the most obvious choice up to a certain level of HP (and within that, 8V vs. 16V). The 5 cylinder whiteblock is probably the best choice for a certain range. Past that, you're probably better off with something like an LS or 2JZ swap.

Each additional HP out of a given platform costs more than the last one did, at some points it's just a better idea to jump to another $/HP curve.
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Old 08-23-2018, 03:32 PM   #4
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It's always fun to say "it's just the stock engine block" when someone is blown away that they just lost to an old Volvo.
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Old 08-23-2018, 03:41 PM   #5
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I think you misspelled LS.
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Old 08-23-2018, 03:52 PM   #6
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Twin turbo hx35 rötblock!

But seriously, keep it stock, juat not stock
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Old 08-23-2018, 07:03 PM   #7
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Has anyone stuck a BMW S14 motor in a 240?
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Old 08-23-2018, 07:09 PM   #8
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Redblock.
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Old 08-23-2018, 11:13 PM   #9
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I guess I'm trying to crack 300hp not too expensively. Not building a drag car but always like to improve and crank the boost.
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Old 08-23-2018, 11:19 PM   #10
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Crack 300hp then crack the transmission?
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Old 08-23-2018, 11:37 PM   #11
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Quote:
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Crack 300hp then crack the transmission?
I think Johns WCT5 held 350ish whp no problem
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Old 08-23-2018, 11:39 PM   #12
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My $.02, I6 whiteblock with T5. Roger has an adapter for it. Put some low boost on it for an easy 300-325 with upgraded injectors. It's been done so no wheel reinventing here. Smooth reliable powa.
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Old 08-24-2018, 08:44 AM   #13
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Quote:
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I think Johns WCT5 held 350ish whp no problem
It was making all sorts of noises after a while, but nothing ever broke. It wasn't necessarily a super nice transmission to begin with, mildly suspect $400 'rebuilt' CL special.
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Old 08-24-2018, 09:56 AM   #14
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My $0.02 is that the 240 platform is too heavy for a 'performance' 4cyl. I was always very underwhelmed by my B21+T/MS2/AW71/16T combo, because I'm not a believer in high boost. 20 psi to make 300+ just seems counterproductive when you can do it with much less if the engine is 'better/bigger'. That's why I went with the B6304S swap, although I don't plan on boosting it any time soon. A smooth 200/200 on tap, without stress, will be fun enough .

Yes, an LS would make 300+ much easier, but I like inline-6s and couldn't afford a 2JZ. They've got too much scene tax around here.
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Old 08-24-2018, 10:03 AM   #15
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LS ALL THE THINGS.

I did. no ragrats.
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Old 08-24-2018, 10:05 AM   #16
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Quote:
Originally Posted by LeedomtoFreedom View Post
I guess I'm trying to crack 300hp not too expensively. Not building a drag car but always like to improve and crank the boost.
What's your overall setup? I ask because an hx35 should get you to your goal of 300hp fairly easily, if you have the right supporting mods.
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Old 08-24-2018, 10:29 AM   #17
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Quote:
Originally Posted by Eviltwin View Post
LS ALL THE THINGS.

I did. no ragrats.
Did you use the 240 stock transmission?
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Old 08-24-2018, 10:35 AM   #18
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Did you use the 240 stock transmission?
good lord no.

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Old 08-24-2018, 10:41 AM   #19
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Okay so I've got a 92 WC T5 (almost the latest iteration) which have been known to hold 300-350 depending on driving style.

T5s have been known to be a little noisy, mine is pretty quiet.

Also not trying to drift away (pun) from Volvo based engines. So no LS because that seems to easy.

Quote:
I6 whiteblock
is this cost effective compared to an I5 or is the gap much larger.

I have hx35, 94 block, large IC, 43lb inj (probably not big enough) 3" maf, 3" exhaust thats leaks like a siv, 90+ mani with light porting, 530 head, g80 in rear blah blah

Most of the parts I could get to work with a new engine, also have a welder so exhaust and making engine mounts won't be difficult
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Old 08-24-2018, 10:55 AM   #20
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LS is too easy. Lol.

It's probably no harder or easier than putting *any* engine and transmission other than a redblock in there.

I guess what's easier is the HP you can make with one afterward, but I'm hard pressed to ponder why that would be a bad thing.
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Old 08-24-2018, 12:04 PM   #21
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If you have running issues right now already,
What makes you think that an engine swap will be successful and not a total pain?
What is holding you back from making 300hp right now?

I am not trying to be a dick , I just do not see the logic.
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Old 08-24-2018, 12:40 PM   #22
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Quote:
Originally Posted by Broke4speed View Post
My $0.02 is that the 240 platform is too heavy for a 'performance' 4cyl. I was always very underwhelmed by my B21+T/MS2/AW71/16T combo, because I'm not a believer in high boost. 20 psi to make 300+ just seems counterproductive when you can do it with much less if the engine is 'better/bigger'. That's why I went with the B6304S swap, although I don't plan on boosting it any time soon. A smooth 200/200 on tap, without stress, will be fun enough .

Yes, an LS would make 300+ much easier, but I like inline-6s and couldn't afford a 2JZ. They've got too much scene tax around here.
Quitters never prosper, I'm around 250 on my B21 + t /T5 and it's a hoot to drive. I'm a sucker for inline 6's though and think a 2Jz would be sweet, I wouldn't mess with white block because pain in the ass cam/ valve cover b.s.
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Old 08-24-2018, 02:27 PM   #23
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Quote:
Originally Posted by VB242 View Post
Quitters never prosper, I'm around 250 on my B21 + t /T5 and it's a hoot to drive. I'm a sucker for inline 6's though and think a 2Jz would be sweet, I wouldn't mess with white block because pain in the ass cam/ valve cover b.s.
I was dead set on the B21 originally...until it assploded a frost plug after a quick WOT pull at 10 psi. That was the defining moment for me. I realized I could either put money into the redblock to get it to the 'reliable power' level I wanted, or swap something else in...and I'm a sucker for engine swaps .

I still have the B21+T though, because I'm pretty sure it will go back in one day.
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Old 08-24-2018, 02:53 PM   #24
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Quote:
If you have running issues right now already,
What makes you think that an engine swap will be successful and not a total pain?
I'm not saying it won't be painful, but for the cost of doing standalone ems and the labor to get all of that to work, maybe I can consider upgrading to more cylinders and making the power easier
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Old 08-24-2018, 02:55 PM   #25
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Also going to an engine that's newer has its benefits
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