Random SR20DE(T) conversion questions

Discuss engine swap details here!

Moderators: notoptoy, S Allen, Solex68

Post Reply
punkzdriver
Roadster Fanatic
Posts: 256
Joined: Mon Jun 04, 2012 12:51 pm
Location: Long Island New York

Random SR20DE(T) conversion questions

Post by punkzdriver »

As I am researching this swap, I learn things, and the more you know, the more you realize you dont know.

Im keeping an eye on the wiki for the step by step swap, but do understand that all swaps and swap plans are different.

I would appreciate anyone's help with what might be simple questions, but are unknown to me. Michael and Kevin have been particularly helpful and generous with their time and info.

I would like to know some more about crank pulleys that are used.
Is the stock pulley usually used? I know power steering and A/C arent, so I didnt know if an alternative crank pulley was used.
Can the stock pulley be powder coated? Or does that affect its balance with the crank?
Has anyone ever used a lightweight/underdriven pulley, or are those shied away from?
Waiting for the bugs to be worked out...
User avatar
spriso
Vendor
Posts: 1629
Joined: Wed Jun 04, 2003 9:20 am
Location: Oregon
Contact:

Re: Random SR20DE(T) conversion questions

Post by spriso »

Quick answer to your crank pulley question:

1. We use the stock crank pulley.

2. We will occasionally cut the front pulley off in the lathe and then rebalance the pulley.

3. You can't powder coat the pulley as it is infused with rubber-- paint it is!

4. There are aftermarket crank pulleys available, but our research shows limited benefits-- they were popular about 10 years ago, but I don't see many people still using them...

My . 02 Yen-- spend at will.

Michael
Spriso Motorsports
http://www.spriso.com
Instagram https://instagram.com/spriso/
SR20 Powered Roadsters
Engine swap kits Available! See my website!
punkzdriver
Roadster Fanatic
Posts: 256
Joined: Mon Jun 04, 2012 12:51 pm
Location: Long Island New York

Re: Random SR20DE(T) conversion questions

Post by punkzdriver »

Thanks Michael!
Do you cut the front pulley off for aesthetics or for fit? I was asking more for color options, and if it needed to be replaced.
Waiting for the bugs to be worked out...
User avatar
spriso
Vendor
Posts: 1629
Joined: Wed Jun 04, 2003 9:20 am
Location: Oregon
Contact:

Re: Random SR20DE(T) conversion questions

Post by spriso »

You don't have to cut the AC portion off, we just do it to make things look a little cleaner.

-m
Spriso Motorsports
http://www.spriso.com
Instagram https://instagram.com/spriso/
SR20 Powered Roadsters
Engine swap kits Available! See my website!
User avatar
RCMike
Roadsteraholic
Posts: 2460
Joined: Tue Mar 13, 2012 12:58 pm
Location: Pomona, CA

Re: Random SR20DE(T) conversion questions

Post by RCMike »

On my stock SR, I used a stock pulley, painted.. It looked good, and was OEM good..

On my VE motor, when we sent the whole rotating assembly in for balance, I had them cut off the front 2 pulleys off and balance it.
punkzdriver
Roadster Fanatic
Posts: 256
Joined: Mon Jun 04, 2012 12:51 pm
Location: Long Island New York

Re: Random SR20DE(T) conversion questions

Post by punkzdriver »

spriso wrote:Quick answer to your crank pulley question:

1. We use the stock crank pulley.

2. We will occasionally cut the front pulley off in the lathe and then rebalance the pulley.

3. You can't powder coat the pulley as it is infused with rubber-- paint it is!

4. There are aftermarket crank pulleys available, but our research shows limited benefits-- they were popular about 10 years ago, but I don't see many people still using them...

My . 02 Yen-- spend at will.

Michael
Thanks. To be clear, you cut the front off, and then run two belts, one to the alt. and one to the water pump?
Waiting for the bugs to be worked out...
User avatar
pebbles
Roadster Fanatic-Site Supporter
Posts: 3931
Joined: Thu Dec 16, 2010 12:00 am
Location: Washington

Re: Random SR20DE(T) conversion questions

Post by pebbles »

One belt.
David




"When we were standing next to the motor while on the dyno, and the motor hit VVL, eyes went watery.."
User avatar
RCMike
Roadsteraholic
Posts: 2460
Joined: Tue Mar 13, 2012 12:58 pm
Location: Pomona, CA

Re: Random SR20DE(T) conversion questions

Post by RCMike »

I have always run 1 belt
User avatar
spriso
Vendor
Posts: 1629
Joined: Wed Jun 04, 2003 9:20 am
Location: Oregon
Contact:

Re: Random SR20DE(T) conversion questions

Post by spriso »

This will probably help:

Image

Image

Michael
Spriso Motorsports
http://www.spriso.com
Instagram https://instagram.com/spriso/
SR20 Powered Roadsters
Engine swap kits Available! See my website!
SPL311-27018
Roadster Newby
Posts: 15
Joined: Fri Apr 08, 2016 7:16 pm
Location: San Jose, CA
Model: 1500/1600
Year: High Windshield-68-70

Re: Random SR20DE(T) conversion questions

Post by SPL311-27018 »

just curious, is it possible for the roadster engine bay to accommodate AC components with the SR20DET swap?
User avatar
spriso
Vendor
Posts: 1629
Joined: Wed Jun 04, 2003 9:20 am
Location: Oregon
Contact:

Re: Random SR20DE(T) conversion questions

Post by spriso »

Yes, it can be done. Shannon has AC on his S14 SR20DE swap. Alvin will post some pics I'm sure.

It gets more complicated on the turbo swaps as the intercooler sits where you would normally put an ac condenser but with some careful packaging....

Michael
Spriso Motorsports
http://www.spriso.com
Instagram https://instagram.com/spriso/
SR20 Powered Roadsters
Engine swap kits Available! See my website!
Post Reply